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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 11590 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) | |
| 2 | 1 | ancoms 458 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) |
| 3 | negcl 11397 | . . 3 ⊢ (𝐵 ∈ ℂ → -𝐵 ∈ ℂ) | |
| 4 | mulcom 11130 | . . 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 11130 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) = (𝐵 · 𝐴)) | |
| 7 | 6 | negeqd 11391 | . 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 7369 ℂcc 11042 · cmul 11049 -cneg 11382 |
| 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 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 |
| 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 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5526 df-po 5539 df-so 5540 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11186 df-mnf 11187 df-ltxr 11189 df-sub 11383 df-neg 11384 |
| This theorem is referenced by: mulneg12 11592 submul2 11594 mulsub 11597 mulneg2i 11601 mulneg2d 11608 mulle0b 12030 zmulcl 12558 binom2sub 14161 cjreb 15065 recj 15066 reneg 15067 imcj 15074 imneg 15075 ipcnval 15085 cjneg 15089 cnpart 15182 efexp 16045 efmival 16097 tanhbnd 16105 sinsub 16112 cossub 16113 odd2np1 16287 itgneg 25681 dvsincos 25861 sinperlem 26365 efimpi 26376 dcubic2 26730 dcubic 26732 dquart 26739 quartlem1 26743 asinlem2 26755 asinneg 26772 sinasin 26775 cosasin 26790 atanneg 26793 atanlogadd 26800 atanlogsub 26802 cosatan 26807 atantan 26809 atans2 26817 rpvmasum2 27399 ipasslem2 30734 dvasin 37671 pell1234qrdich 42822 rmxm1 42896 |
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