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Theorem fvif 6114
 Description: Move a conditional outside of a function. (Contributed by Jeff Madsen, 2-Sep-2009.)
Assertion
Ref Expression
fvif (𝐹‘if(𝜑, 𝐴, 𝐵)) = if(𝜑, (𝐹𝐴), (𝐹𝐵))

Proof of Theorem fvif
StepHypRef Expression
1 fveq2 6103 . 2 (if(𝜑, 𝐴, 𝐵) = 𝐴 → (𝐹‘if(𝜑, 𝐴, 𝐵)) = (𝐹𝐴))
2 fveq2 6103 . 2 (if(𝜑, 𝐴, 𝐵) = 𝐵 → (𝐹‘if(𝜑, 𝐴, 𝐵)) = (𝐹𝐵))
31, 2ifsb 4049 1 (𝐹‘if(𝜑, 𝐴, 𝐵)) = if(𝜑, (𝐹𝐴), (𝐹𝐵))
 Colors of variables: wff setvar class Syntax hints:   = wceq 1475  ifcif 4036  ‘cfv 5804 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-rex 2902  df-rab 2905  df-v 3175  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-iota 5768  df-fv 5812 This theorem is referenced by:  ccatco  13432  sumeq2ii  14271  prodeq2ii  14482  ruclem1  14799  xpslem  16056  mat2pmat1  20356  decpmatid  20394  pmatcollpwscmatlem1  20413  copco  22626  pcopt  22630  pcopt2  22631  limccnp  23461  prmorcht  24704  pclogsum  24740  mblfinlem2  32617  ftc1anclem8  32662  ftc1anc  32663  fvifeq  40321
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