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Mirrors > Home > MPE Home > Th. List > Mathboxes > sqdivzi | Structured version Visualization version GIF version |
Description: Distribution of square over division. (Contributed by Scott Fenton, 7-Jun-2013.) |
Ref | Expression |
---|---|
sqdivzi.1 | ⊢ 𝐴 ∈ ℂ |
sqdivzi.2 | ⊢ 𝐵 ∈ ℂ |
Ref | Expression |
---|---|
sqdivzi | ⊢ (𝐵 ≠ 0 → ((𝐴 / 𝐵)↑2) = ((𝐴↑2) / (𝐵↑2))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | oveq2 7420 | . . . 4 ⊢ (𝐵 = if(𝐵 ≠ 0, 𝐵, 1) → (𝐴 / 𝐵) = (𝐴 / if(𝐵 ≠ 0, 𝐵, 1))) | |
2 | 1 | oveq1d 7427 | . . 3 ⊢ (𝐵 = if(𝐵 ≠ 0, 𝐵, 1) → ((𝐴 / 𝐵)↑2) = ((𝐴 / if(𝐵 ≠ 0, 𝐵, 1))↑2)) |
3 | oveq1 7419 | . . . 4 ⊢ (𝐵 = if(𝐵 ≠ 0, 𝐵, 1) → (𝐵↑2) = (if(𝐵 ≠ 0, 𝐵, 1)↑2)) | |
4 | 3 | oveq2d 7428 | . . 3 ⊢ (𝐵 = if(𝐵 ≠ 0, 𝐵, 1) → ((𝐴↑2) / (𝐵↑2)) = ((𝐴↑2) / (if(𝐵 ≠ 0, 𝐵, 1)↑2))) |
5 | 2, 4 | eqeq12d 2747 | . 2 ⊢ (𝐵 = if(𝐵 ≠ 0, 𝐵, 1) → (((𝐴 / 𝐵)↑2) = ((𝐴↑2) / (𝐵↑2)) ↔ ((𝐴 / if(𝐵 ≠ 0, 𝐵, 1))↑2) = ((𝐴↑2) / (if(𝐵 ≠ 0, 𝐵, 1)↑2)))) |
6 | sqdivzi.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
7 | sqdivzi.2 | . . . 4 ⊢ 𝐵 ∈ ℂ | |
8 | ax-1cn 11171 | . . . 4 ⊢ 1 ∈ ℂ | |
9 | 7, 8 | ifcli 4575 | . . 3 ⊢ if(𝐵 ≠ 0, 𝐵, 1) ∈ ℂ |
10 | elimne0 11209 | . . 3 ⊢ if(𝐵 ≠ 0, 𝐵, 1) ≠ 0 | |
11 | 6, 9, 10 | sqdivi 14154 | . 2 ⊢ ((𝐴 / if(𝐵 ≠ 0, 𝐵, 1))↑2) = ((𝐴↑2) / (if(𝐵 ≠ 0, 𝐵, 1)↑2)) |
12 | 5, 11 | dedth 4586 | 1 ⊢ (𝐵 ≠ 0 → ((𝐴 / 𝐵)↑2) = ((𝐴↑2) / (𝐵↑2))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2105 ≠ wne 2939 ifcif 4528 (class class class)co 7412 ℂcc 11111 0cc0 11113 1c1 11114 / cdiv 11876 2c2 12272 ↑cexp 14032 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7728 ax-cnex 11169 ax-resscn 11170 ax-1cn 11171 ax-icn 11172 ax-addcl 11173 ax-addrcl 11174 ax-mulcl 11175 ax-mulrcl 11176 ax-mulcom 11177 ax-addass 11178 ax-mulass 11179 ax-distr 11180 ax-i2m1 11181 ax-1ne0 11182 ax-1rid 11183 ax-rnegex 11184 ax-rrecex 11185 ax-cnre 11186 ax-pre-lttri 11187 ax-pre-lttrn 11188 ax-pre-ltadd 11189 ax-pre-mulgt0 11190 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3375 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7859 df-2nd 7979 df-frecs 8269 df-wrecs 8300 df-recs 8374 df-rdg 8413 df-er 8706 df-en 8943 df-dom 8944 df-sdom 8945 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11451 df-neg 11452 df-div 11877 df-nn 12218 df-2 12280 df-n0 12478 df-z 12564 df-uz 12828 df-seq 13972 df-exp 14033 |
This theorem is referenced by: (None) |
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