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| Mirrors > Home > MPE Home > Th. List > mulneg2 | Structured version Visualization version GIF version | ||
| Description: The product with a negative is the negative of the product. (Contributed by NM, 30-Jul-2004.) |
| Ref | Expression |
|---|---|
| mulneg2 | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · -𝐵) = -(𝐴 · 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mulneg1 11574 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) | |
| 2 | 1 | ancoms 458 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) |
| 3 | negcl 11381 | . . 3 ⊢ (𝐵 ∈ ℂ → -𝐵 ∈ ℂ) | |
| 4 | mulcom 11114 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ -𝐵 ∈ ℂ) → (𝐴 · -𝐵) = (-𝐵 · 𝐴)) | |
| 5 | 3, 4 | sylan2 593 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · -𝐵) = (-𝐵 · 𝐴)) |
| 6 | mulcom 11114 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) = (𝐵 · 𝐴)) | |
| 7 | 6 | negeqd 11375 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → -(𝐴 · 𝐵) = -(𝐵 · 𝐴)) |
| 8 | 2, 5, 7 | 3eqtr4d 2774 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · -𝐵) = -(𝐴 · 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 (class class class)co 7353 ℂcc 11026 · cmul 11033 -cneg 11366 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-po 5531 df-so 5532 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-er 8632 df-en 8880 df-dom 8881 df-sdom 8882 df-pnf 11170 df-mnf 11171 df-ltxr 11173 df-sub 11367 df-neg 11368 |
| This theorem is referenced by: mulneg12 11576 submul2 11578 mulsub 11581 mulneg2i 11585 mulneg2d 11592 mulle0b 12014 zmulcl 12542 binom2sub 14145 cjreb 15048 recj 15049 reneg 15050 imcj 15057 imneg 15058 ipcnval 15068 cjneg 15072 cnpart 15165 efexp 16028 efmival 16080 tanhbnd 16088 sinsub 16095 cossub 16096 odd2np1 16270 itgneg 25721 dvsincos 25901 sinperlem 26405 efimpi 26416 dcubic2 26770 dcubic 26772 dquart 26779 quartlem1 26783 asinlem2 26795 asinneg 26812 sinasin 26815 cosasin 26830 atanneg 26833 atanlogadd 26840 atanlogsub 26842 cosatan 26847 atantan 26849 atans2 26857 rpvmasum2 27439 ipasslem2 30794 dvasin 37686 pell1234qrdich 42837 rmxm1 42910 |
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