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Theorem dvexp3 22206
Description: Derivative of an exponential of integer exponent. (Contributed by Mario Carneiro, 26-Feb-2015.)
Assertion
Ref Expression
dvexp3  |-  ( N  e.  ZZ  ->  ( CC  _D  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) )
Distinct variable group:    x, N

Proof of Theorem dvexp3
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 elznn0nn 10879 . 2  |-  ( N  e.  ZZ  <->  ( N  e.  NN0  \/  ( N  e.  RR  /\  -u N  e.  NN ) ) )
2 cnelprrecn 9586 . . . . . 6  |-  CC  e.  { RR ,  CC }
32a1i 11 . . . . 5  |-  ( N  e.  NN0  ->  CC  e.  { RR ,  CC }
)
4 expcl 12153 . . . . . 6  |-  ( ( x  e.  CC  /\  N  e.  NN0 )  -> 
( x ^ N
)  e.  CC )
54ancoms 453 . . . . 5  |-  ( ( N  e.  NN0  /\  x  e.  CC )  ->  ( x ^ N
)  e.  CC )
6 c0ex 9591 . . . . . . 7  |-  0  e.  _V
7 ovex 6310 . . . . . . 7  |-  ( N  x.  ( x ^
( N  -  1 ) ) )  e. 
_V
86, 7ifex 4008 . . . . . 6  |-  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^
( N  -  1 ) ) ) )  e.  _V
98a1i 11 . . . . 5  |-  ( ( N  e.  NN0  /\  x  e.  CC )  ->  if ( N  =  0 ,  0 ,  ( N  x.  (
x ^ ( N  -  1 ) ) ) )  e.  _V )
10 dvexp2 22184 . . . . 5  |-  ( N  e.  NN0  ->  ( CC 
_D  ( x  e.  CC  |->  ( x ^ N ) ) )  =  ( x  e.  CC  |->  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) ) )
11 difssd 3632 . . . . 5  |-  ( N  e.  NN0  ->  ( CC 
\  { 0 } )  C_  CC )
12 eqid 2467 . . . . . . . 8  |-  ( TopOpen ` fld )  =  ( TopOpen ` fld )
1312cnfldtop 21118 . . . . . . 7  |-  ( TopOpen ` fld )  e.  Top
1412cnfldtopon 21117 . . . . . . . . 9  |-  ( TopOpen ` fld )  e.  (TopOn `  CC )
1514toponunii 19240 . . . . . . . 8  |-  CC  =  U. ( TopOpen ` fld )
1615restid 14692 . . . . . . 7  |-  ( (
TopOpen ` fld )  e.  Top  ->  ( ( TopOpen ` fld )t  CC )  =  (
TopOpen ` fld ) )
1713, 16ax-mp 5 . . . . . 6  |-  ( (
TopOpen ` fld )t  CC )  =  (
TopOpen ` fld )
1817eqcomi 2480 . . . . 5  |-  ( TopOpen ` fld )  =  ( ( TopOpen ` fld )t  CC )
1912cnfldhaus 21119 . . . . . . . 8  |-  ( TopOpen ` fld )  e.  Haus
20 0cn 9589 . . . . . . . 8  |-  0  e.  CC
2115sncld 19678 . . . . . . . 8  |-  ( ( ( TopOpen ` fld )  e.  Haus  /\  0  e.  CC )  ->  { 0 }  e.  ( Clsd `  ( TopOpen
` fld
) ) )
2219, 20, 21mp2an 672 . . . . . . 7  |-  { 0 }  e.  ( Clsd `  ( TopOpen ` fld ) )
2315cldopn 19338 . . . . . . 7  |-  ( { 0 }  e.  (
Clsd `  ( TopOpen ` fld ) )  ->  ( CC  \  { 0 } )  e.  ( TopOpen ` fld )
)
2422, 23ax-mp 5 . . . . . 6  |-  ( CC 
\  { 0 } )  e.  ( TopOpen ` fld )
2524a1i 11 . . . . 5  |-  ( N  e.  NN0  ->  ( CC 
\  { 0 } )  e.  ( TopOpen ` fld )
)
263, 5, 9, 10, 11, 18, 12, 25dvmptres 22193 . . . 4  |-  ( N  e.  NN0  ->  ( CC 
_D  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) ) )
27 ifid 3976 . . . . . 6  |-  if ( N  =  0 ,  ( N  x.  (
x ^ ( N  -  1 ) ) ) ,  ( N  x.  ( x ^
( N  -  1 ) ) ) )  =  ( N  x.  ( x ^ ( N  -  1 ) ) )
28 id 22 . . . . . . . . 9  |-  ( N  =  0  ->  N  =  0 )
29 oveq1 6292 . . . . . . . . . 10  |-  ( N  =  0  ->  ( N  -  1 )  =  ( 0  -  1 ) )
3029oveq2d 6301 . . . . . . . . 9  |-  ( N  =  0  ->  (
x ^ ( N  -  1 ) )  =  ( x ^
( 0  -  1 ) ) )
3128, 30oveq12d 6303 . . . . . . . 8  |-  ( N  =  0  ->  ( N  x.  ( x ^ ( N  - 
1 ) ) )  =  ( 0  x.  ( x ^ (
0  -  1 ) ) ) )
32 eldifsn 4152 . . . . . . . . . . 11  |-  ( x  e.  ( CC  \  { 0 } )  <-> 
( x  e.  CC  /\  x  =/=  0 ) )
33 0z 10876 . . . . . . . . . . . . 13  |-  0  e.  ZZ
34 peano2zm 10907 . . . . . . . . . . . . 13  |-  ( 0  e.  ZZ  ->  (
0  -  1 )  e.  ZZ )
3533, 34ax-mp 5 . . . . . . . . . . . 12  |-  ( 0  -  1 )  e.  ZZ
36 expclz 12160 . . . . . . . . . . . 12  |-  ( ( x  e.  CC  /\  x  =/=  0  /\  (
0  -  1 )  e.  ZZ )  -> 
( x ^ (
0  -  1 ) )  e.  CC )
3735, 36mp3an3 1313 . . . . . . . . . . 11  |-  ( ( x  e.  CC  /\  x  =/=  0 )  -> 
( x ^ (
0  -  1 ) )  e.  CC )
3832, 37sylbi 195 . . . . . . . . . 10  |-  ( x  e.  ( CC  \  { 0 } )  ->  ( x ^
( 0  -  1 ) )  e.  CC )
3938adantl 466 . . . . . . . . 9  |-  ( ( N  e.  NN0  /\  x  e.  ( CC  \  { 0 } ) )  ->  ( x ^ ( 0  -  1 ) )  e.  CC )
4039mul02d 9778 . . . . . . . 8  |-  ( ( N  e.  NN0  /\  x  e.  ( CC  \  { 0 } ) )  ->  ( 0  x.  ( x ^
( 0  -  1 ) ) )  =  0 )
4131, 40sylan9eqr 2530 . . . . . . 7  |-  ( ( ( N  e.  NN0  /\  x  e.  ( CC 
\  { 0 } ) )  /\  N  =  0 )  -> 
( N  x.  (
x ^ ( N  -  1 ) ) )  =  0 )
4241ifeq1da 3969 . . . . . 6  |-  ( ( N  e.  NN0  /\  x  e.  ( CC  \  { 0 } ) )  ->  if ( N  =  0 , 
( N  x.  (
x ^ ( N  -  1 ) ) ) ,  ( N  x.  ( x ^
( N  -  1 ) ) ) )  =  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) )
4327, 42syl5eqr 2522 . . . . 5  |-  ( ( N  e.  NN0  /\  x  e.  ( CC  \  { 0 } ) )  ->  ( N  x.  ( x ^ ( N  -  1 ) ) )  =  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^ ( N  - 
1 ) ) ) ) )
4443mpteq2dva 4533 . . . 4  |-  ( N  e.  NN0  ->  ( x  e.  ( CC  \  { 0 } ) 
|->  ( N  x.  (
x ^ ( N  -  1 ) ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  if ( N  =  0 ,  0 ,  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) ) )
4526, 44eqtr4d 2511 . . 3  |-  ( N  e.  NN0  ->  ( CC 
_D  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) )
46 eldifi 3626 . . . . . . . 8  |-  ( x  e.  ( CC  \  { 0 } )  ->  x  e.  CC )
4746adantl 466 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  x  e.  CC )
48 simpll 753 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  N  e.  RR )
4948recnd 9623 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  N  e.  CC )
50 nnnn0 10803 . . . . . . . 8  |-  ( -u N  e.  NN  ->  -u N  e.  NN0 )
5150ad2antlr 726 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  -u N  e.  NN0 )
52 expneg2 12144 . . . . . . 7  |-  ( ( x  e.  CC  /\  N  e.  CC  /\  -u N  e.  NN0 )  ->  (
x ^ N )  =  ( 1  / 
( x ^ -u N
) ) )
5347, 49, 51, 52syl3anc 1228 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ N
)  =  ( 1  /  ( x ^ -u N ) ) )
5453mpteq2dva 4533 . . . . 5  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) )  =  ( x  e.  ( CC  \  { 0 } ) 
|->  ( 1  /  (
x ^ -u N
) ) ) )
5554oveq2d 6301 . . . 4  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( x  e.  ( CC  \  { 0 } )  |->  ( x ^ N ) ) )  =  ( CC  _D  ( x  e.  ( CC  \  { 0 } )  |->  ( 1  / 
( x ^ -u N
) ) ) ) )
562a1i 11 . . . . 5  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  CC  e.  { RR ,  CC } )
57 eldifsni 4153 . . . . . . . 8  |-  ( x  e.  ( CC  \  { 0 } )  ->  x  =/=  0
)
5857adantl 466 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  x  =/=  0 )
59 nnz 10887 . . . . . . . 8  |-  ( -u N  e.  NN  ->  -u N  e.  ZZ )
6059ad2antlr 726 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  -u N  e.  ZZ )
6147, 58, 60expclzd 12284 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ -u N
)  e.  CC )
6247, 58, 60expne0d 12285 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ -u N
)  =/=  0 )
63 eldifsn 4152 . . . . . 6  |-  ( ( x ^ -u N
)  e.  ( CC 
\  { 0 } )  <->  ( ( x ^ -u N )  e.  CC  /\  (
x ^ -u N
)  =/=  0 ) )
6461, 62, 63sylanbrc 664 . . . . 5  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ -u N
)  e.  ( CC 
\  { 0 } ) )
65 ovex 6310 . . . . . 6  |-  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) )  e.  _V
6665a1i 11 . . . . 5  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  (
x ^ ( -u N  -  1 ) ) )  e.  _V )
67 simpr 461 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  y  e.  ( CC  \  { 0 } ) )  -> 
y  e.  ( CC 
\  { 0 } ) )
68 eldifsn 4152 . . . . . . 7  |-  ( y  e.  ( CC  \  { 0 } )  <-> 
( y  e.  CC  /\  y  =/=  0 ) )
6967, 68sylib 196 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  y  e.  ( CC  \  { 0 } ) )  -> 
( y  e.  CC  /\  y  =/=  0 ) )
70 reccl 10215 . . . . . 6  |-  ( ( y  e.  CC  /\  y  =/=  0 )  -> 
( 1  /  y
)  e.  CC )
7169, 70syl 16 . . . . 5  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  y  e.  ( CC  \  { 0 } ) )  -> 
( 1  /  y
)  e.  CC )
72 negex 9819 . . . . . 6  |-  -u (
1  /  ( y ^ 2 ) )  e.  _V
7372a1i 11 . . . . 5  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  y  e.  ( CC  \  { 0 } ) )  ->  -u ( 1  /  (
y ^ 2 ) )  e.  _V )
74 simpr 461 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  CC )  ->  x  e.  CC )
7550ad2antlr 726 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  CC )  ->  -u N  e.  NN0 )
7674, 75expcld 12279 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  CC )  ->  ( x ^ -u N )  e.  CC )
7765a1i 11 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  CC )  ->  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) )  e.  _V )
78 dvexp 22183 . . . . . . 7  |-  ( -u N  e.  NN  ->  ( CC  _D  ( x  e.  CC  |->  ( x ^ -u N ) ) )  =  ( x  e.  CC  |->  (
-u N  x.  (
x ^ ( -u N  -  1 ) ) ) ) )
7978adantl 466 . . . . . 6  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( x  e.  CC  |->  ( x ^ -u N
) ) )  =  ( x  e.  CC  |->  ( -u N  x.  (
x ^ ( -u N  -  1 ) ) ) ) )
80 difssd 3632 . . . . . 6  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  \  { 0 } ) 
C_  CC )
8124a1i 11 . . . . . 6  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  \  { 0 } )  e.  ( TopOpen ` fld ) )
8256, 76, 77, 79, 80, 18, 12, 81dvmptres 22193 . . . . 5  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( x  e.  ( CC  \  { 0 } )  |->  ( x ^ -u N ) ) )  =  ( x  e.  ( CC  \  {
0 } )  |->  (
-u N  x.  (
x ^ ( -u N  -  1 ) ) ) ) )
83 ax-1cn 9551 . . . . . 6  |-  1  e.  CC
84 dvrec 22185 . . . . . 6  |-  ( 1  e.  CC  ->  ( CC  _D  ( y  e.  ( CC  \  {
0 } )  |->  ( 1  /  y ) ) )  =  ( y  e.  ( CC 
\  { 0 } )  |->  -u ( 1  / 
( y ^ 2 ) ) ) )
8583, 84mp1i 12 . . . . 5  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( y  e.  ( CC  \  { 0 } )  |->  ( 1  /  y ) ) )  =  ( y  e.  ( CC  \  { 0 } ) 
|->  -u ( 1  / 
( y ^ 2 ) ) ) )
86 oveq2 6293 . . . . 5  |-  ( y  =  ( x ^ -u N )  ->  (
1  /  y )  =  ( 1  / 
( x ^ -u N
) ) )
87 oveq1 6292 . . . . . . 7  |-  ( y  =  ( x ^ -u N )  ->  (
y ^ 2 )  =  ( ( x ^ -u N ) ^ 2 ) )
8887oveq2d 6301 . . . . . 6  |-  ( y  =  ( x ^ -u N )  ->  (
1  /  ( y ^ 2 ) )  =  ( 1  / 
( ( x ^ -u N ) ^ 2 ) ) )
8988negeqd 9815 . . . . 5  |-  ( y  =  ( x ^ -u N )  ->  -u (
1  /  ( y ^ 2 ) )  =  -u ( 1  / 
( ( x ^ -u N ) ^ 2 ) ) )
9056, 56, 64, 66, 71, 73, 82, 85, 86, 89dvmptco 22202 . . . 4  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( x  e.  ( CC  \  { 0 } )  |->  ( 1  / 
( x ^ -u N
) ) ) )  =  ( x  e.  ( CC  \  {
0 } )  |->  (
-u ( 1  / 
( ( x ^ -u N ) ^ 2 ) )  x.  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) ) ) ) )
91 2z 10897 . . . . . . . . . . . 12  |-  2  e.  ZZ
9291a1i 11 . . . . . . . . . . 11  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
2  e.  ZZ )
93 expmulz 12181 . . . . . . . . . . 11  |-  ( ( ( x  e.  CC  /\  x  =/=  0 )  /\  ( -u N  e.  ZZ  /\  2  e.  ZZ ) )  -> 
( x ^ ( -u N  x.  2 ) )  =  ( ( x ^ -u N
) ^ 2 ) )
9447, 58, 60, 92, 93syl22anc 1229 . . . . . . . . . 10  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ ( -u N  x.  2 ) )  =  ( ( x ^ -u N
) ^ 2 ) )
9594eqcomd 2475 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( x ^ -u N ) ^ 2 )  =  ( x ^ ( -u N  x.  2 ) ) )
9695oveq2d 6301 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( 1  /  (
( x ^ -u N
) ^ 2 ) )  =  ( 1  /  ( x ^
( -u N  x.  2 ) ) ) )
9796negeqd 9815 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  -u ( 1  /  (
( x ^ -u N
) ^ 2 ) )  =  -u (
1  /  ( x ^ ( -u N  x.  2 ) ) ) )
98 peano2zm 10907 . . . . . . . . . 10  |-  ( -u N  e.  ZZ  ->  (
-u N  -  1 )  e.  ZZ )
9960, 98syl 16 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  -  1 )  e.  ZZ )
10047, 58, 99expclzd 12284 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ ( -u N  -  1 ) )  e.  CC )
10149, 100mulneg1d 10010 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  (
x ^ ( -u N  -  1 ) ) )  =  -u ( N  x.  (
x ^ ( -u N  -  1 ) ) ) )
10297, 101oveq12d 6303 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u ( 1  / 
( ( x ^ -u N ) ^ 2 ) )  x.  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) ) )  =  (
-u ( 1  / 
( x ^ ( -u N  x.  2 ) ) )  x.  -u ( N  x.  ( x ^ ( -u N  -  1 ) ) ) ) )
103 zmulcl 10912 . . . . . . . . . 10  |-  ( (
-u N  e.  ZZ  /\  2  e.  ZZ )  ->  ( -u N  x.  2 )  e.  ZZ )
10460, 91, 103sylancl 662 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  2 )  e.  ZZ )
10547, 58, 104expclzd 12284 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ ( -u N  x.  2 ) )  e.  CC )
10647, 58, 104expne0d 12285 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ ( -u N  x.  2 ) )  =/=  0 )
107105, 106reccld 10314 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( 1  /  (
x ^ ( -u N  x.  2 ) ) )  e.  CC )
10849, 100mulcld 9617 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( N  x.  (
x ^ ( -u N  -  1 ) ) )  e.  CC )
109107, 108mul2negd 10012 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u ( 1  / 
( x ^ ( -u N  x.  2 ) ) )  x.  -u ( N  x.  ( x ^ ( -u N  -  1 ) ) ) )  =  ( ( 1  /  (
x ^ ( -u N  x.  2 ) ) )  x.  ( N  x.  ( x ^ ( -u N  -  1 ) ) ) ) )
110107, 49, 100mul12d 9789 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( 1  / 
( x ^ ( -u N  x.  2 ) ) )  x.  ( N  x.  ( x ^ ( -u N  -  1 ) ) ) )  =  ( N  x.  ( ( 1  /  ( x ^ ( -u N  x.  2 ) ) )  x.  ( x ^
( -u N  -  1 ) ) ) ) )
11147, 58, 104, 99expsubd 12290 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ (
( -u N  -  1 )  -  ( -u N  x.  2 ) ) )  =  ( ( x ^ ( -u N  -  1 ) )  /  ( x ^ ( -u N  x.  2 ) ) ) )
112 nncn 10545 . . . . . . . . . . . . 13  |-  ( -u N  e.  NN  ->  -u N  e.  CC )
113112ad2antlr 726 . . . . . . . . . . . 12  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  ->  -u N  e.  CC )
11483a1i 11 . . . . . . . . . . . 12  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
1  e.  CC )
115104zcnd 10968 . . . . . . . . . . . 12  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  2 )  e.  CC )
116113, 114, 115sub32d 9963 . . . . . . . . . . 11  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( -u N  -  1 )  -  ( -u N  x.  2 ) )  =  ( ( -u N  -  ( -u N  x.  2 ) )  -  1 ) )
117113times2d 10783 . . . . . . . . . . . . . . 15  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  2 )  =  ( -u N  +  -u N ) )
118113, 49negsubd 9937 . . . . . . . . . . . . . . 15  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  +  -u N )  =  (
-u N  -  N
) )
119117, 118eqtrd 2508 . . . . . . . . . . . . . 14  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  x.  2 )  =  ( -u N  -  N )
)
120119oveq2d 6301 . . . . . . . . . . . . 13  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  -  ( -u N  x.  2 ) )  =  ( -u N  -  ( -u N  -  N ) ) )
121113, 49nncand 9936 . . . . . . . . . . . . 13  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  -  ( -u N  -  N ) )  =  N )
122120, 121eqtrd 2508 . . . . . . . . . . . 12  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u N  -  ( -u N  x.  2 ) )  =  N )
123122oveq1d 6300 . . . . . . . . . . 11  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( -u N  -  ( -u N  x.  2 ) )  - 
1 )  =  ( N  -  1 ) )
124116, 123eqtrd 2508 . . . . . . . . . 10  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( -u N  -  1 )  -  ( -u N  x.  2 ) )  =  ( N  -  1 ) )
125124oveq2d 6301 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( x ^ (
( -u N  -  1 )  -  ( -u N  x.  2 ) ) )  =  ( x ^ ( N  -  1 ) ) )
126100, 105, 106divrec2d 10325 . . . . . . . . 9  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( x ^
( -u N  -  1 ) )  /  (
x ^ ( -u N  x.  2 ) ) )  =  ( ( 1  /  (
x ^ ( -u N  x.  2 ) ) )  x.  (
x ^ ( -u N  -  1 ) ) ) )
127111, 125, 1263eqtr3rd 2517 . . . . . . . 8  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( 1  / 
( x ^ ( -u N  x.  2 ) ) )  x.  (
x ^ ( -u N  -  1 ) ) )  =  ( x ^ ( N  -  1 ) ) )
128127oveq2d 6301 . . . . . . 7  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( N  x.  (
( 1  /  (
x ^ ( -u N  x.  2 ) ) )  x.  (
x ^ ( -u N  -  1 ) ) ) )  =  ( N  x.  (
x ^ ( N  -  1 ) ) ) )
129110, 128eqtrd 2508 . . . . . 6  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( ( 1  / 
( x ^ ( -u N  x.  2 ) ) )  x.  ( N  x.  ( x ^ ( -u N  -  1 ) ) ) )  =  ( N  x.  ( x ^ ( N  - 
1 ) ) ) )
130102, 109, 1293eqtrd 2512 . . . . 5  |-  ( ( ( N  e.  RR  /\  -u N  e.  NN )  /\  x  e.  ( CC  \  { 0 } ) )  -> 
( -u ( 1  / 
( ( x ^ -u N ) ^ 2 ) )  x.  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) ) )  =  ( N  x.  ( x ^ ( N  - 
1 ) ) ) )
131130mpteq2dva 4533 . . . 4  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( x  e.  ( CC  \  {
0 } )  |->  (
-u ( 1  / 
( ( x ^ -u N ) ^ 2 ) )  x.  ( -u N  x.  ( x ^ ( -u N  -  1 ) ) ) ) )  =  ( x  e.  ( CC  \  { 0 } )  |->  ( N  x.  ( x ^
( N  -  1 ) ) ) ) )
13255, 90, 1313eqtrd 2512 . . 3  |-  ( ( N  e.  RR  /\  -u N  e.  NN )  ->  ( CC  _D  ( x  e.  ( CC  \  { 0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC  \  {
0 } )  |->  ( N  x.  ( x ^ ( N  - 
1 ) ) ) ) )
13345, 132jaoi 379 . 2  |-  ( ( N  e.  NN0  \/  ( N  e.  RR  /\  -u N  e.  NN ) )  ->  ( CC  _D  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) )
1341, 133sylbi 195 1  |-  ( N  e.  ZZ  ->  ( CC  _D  ( x  e.  ( CC  \  {
0 } )  |->  ( x ^ N ) ) )  =  ( x  e.  ( CC 
\  { 0 } )  |->  ( N  x.  ( x ^ ( N  -  1 ) ) ) ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    \/ wo 368    /\ wa 369    = wceq 1379    e. wcel 1767    =/= wne 2662   _Vcvv 3113    \ cdif 3473   ifcif 3939   {csn 4027   {cpr 4029    |-> cmpt 4505   ` cfv 5588  (class class class)co 6285   CCcc 9491   RRcr 9492   0cc0 9493   1c1 9494    + caddc 9496    x. cmul 9498    - cmin 9806   -ucneg 9807    / cdiv 10207   NNcn 10537   2c2 10586   NN0cn0 10796   ZZcz 10865   ^cexp 12135   ↾t crest 14679   TopOpenctopn 14680  ℂfldccnfld 18231   Topctop 19201   Clsdccld 19323   Hauscha 19615    _D cdv 22094
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1601  ax-4 1612  ax-5 1680  ax-6 1719  ax-7 1739  ax-8 1769  ax-9 1771  ax-10 1786  ax-11 1791  ax-12 1803  ax-13 1968  ax-ext 2445  ax-rep 4558  ax-sep 4568  ax-nul 4576  ax-pow 4625  ax-pr 4686  ax-un 6577  ax-inf2 8059  ax-cnex 9549  ax-resscn 9550  ax-1cn 9551  ax-icn 9552  ax-addcl 9553  ax-addrcl 9554  ax-mulcl 9555  ax-mulrcl 9556  ax-mulcom 9557  ax-addass 9558  ax-mulass 9559  ax-distr 9560  ax-i2m1 9561  ax-1ne0 9562  ax-1rid 9563  ax-rnegex 9564  ax-rrecex 9565  ax-cnre 9566  ax-pre-lttri 9567  ax-pre-lttrn 9568  ax-pre-ltadd 9569  ax-pre-mulgt0 9570  ax-pre-sup 9571  ax-addf 9572  ax-mulf 9573
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3or 974  df-3an 975  df-tru 1382  df-ex 1597  df-nf 1600  df-sb 1712  df-eu 2279  df-mo 2280  df-clab 2453  df-cleq 2459  df-clel 2462  df-nfc 2617  df-ne 2664  df-nel 2665  df-ral 2819  df-rex 2820  df-reu 2821  df-rmo 2822  df-rab 2823  df-v 3115  df-sbc 3332  df-csb 3436  df-dif 3479  df-un 3481  df-in 3483  df-ss 3490  df-pss 3492  df-nul 3786  df-if 3940  df-pw 4012  df-sn 4028  df-pr 4030  df-tp 4032  df-op 4034  df-uni 4246  df-int 4283  df-iun 4327  df-iin 4328  df-br 4448  df-opab 4506  df-mpt 4507  df-tr 4541  df-eprel 4791  df-id 4795  df-po 4800  df-so 4801  df-fr 4838  df-se 4839  df-we 4840  df-ord 4881  df-on 4882  df-lim 4883  df-suc 4884  df-xp 5005  df-rel 5006  df-cnv 5007  df-co 5008  df-dm 5009  df-rn 5010  df-res 5011  df-ima 5012  df-iota 5551  df-fun 5590  df-fn 5591  df-f 5592  df-f1 5593  df-fo 5594  df-f1o 5595  df-fv 5596  df-isom 5597  df-riota 6246  df-ov 6288  df-oprab 6289  df-mpt2 6290  df-of 6525  df-om 6686  df-1st 6785  df-2nd 6786  df-supp 6903  df-recs 7043  df-rdg 7077  df-1o 7131  df-2o 7132  df-oadd 7135  df-er 7312  df-map 7423  df-pm 7424  df-ixp 7471  df-en 7518  df-dom 7519  df-sdom 7520  df-fin 7521  df-fsupp 7831  df-fi 7872  df-sup 7902  df-oi 7936  df-card 8321  df-cda 8549  df-pnf 9631  df-mnf 9632  df-xr 9633  df-ltxr 9634  df-le 9635  df-sub 9808  df-neg 9809  df-div 10208  df-nn 10538  df-2 10595  df-3 10596  df-4 10597  df-5 10598  df-6 10599  df-7 10600  df-8 10601  df-9 10602  df-10 10603  df-n0 10797  df-z 10866  df-dec 10978  df-uz 11084  df-q 11184  df-rp 11222  df-xneg 11319  df-xadd 11320  df-xmul 11321  df-icc 11537  df-fz 11674  df-fzo 11794  df-seq 12077  df-exp 12136  df-hash 12375  df-cj 12898  df-re 12899  df-im 12900  df-sqrt 13034  df-abs 13035  df-struct 14495  df-ndx 14496  df-slot 14497  df-base 14498  df-sets 14499  df-ress 14500  df-plusg 14571  df-mulr 14572  df-starv 14573  df-sca 14574  df-vsca 14575  df-ip 14576  df-tset 14577  df-ple 14578  df-ds 14580  df-unif 14581  df-hom 14582  df-cco 14583  df-rest 14681  df-topn 14682  df-0g 14700  df-gsum 14701  df-topgen 14702  df-pt 14703  df-prds 14706  df-xrs 14760  df-qtop 14765  df-imas 14766  df-xps 14768  df-mre 14844  df-mrc 14845  df-acs 14847  df-mnd 15735  df-submnd 15790  df-mulg 15874  df-cntz 16169  df-cmn 16615  df-psmet 18222  df-xmet 18223  df-met 18224  df-bl 18225  df-mopn 18226  df-fbas 18227  df-fg 18228  df-cnfld 18232  df-top 19206  df-bases 19208  df-topon 19209  df-topsp 19210  df-cld 19326  df-ntr 19327  df-cls 19328  df-nei 19405  df-lp 19443  df-perf 19444  df-cn 19534  df-cnp 19535  df-t1 19621  df-haus 19622  df-tx 19890  df-hmeo 20083  df-fil 20174  df-fm 20266  df-flim 20267  df-flf 20268  df-xms 20650  df-ms 20651  df-tms 20652  df-cncf 21209  df-limc 22097  df-dv 22098
This theorem is referenced by: (None)
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