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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 11577 | . . 3 ⊢ ((𝐵 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) | |
| 2 | 1 | ancoms 459 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (-𝐵 · 𝐴) = -(𝐵 · 𝐴)) |
| 3 | negcl 11384 | . . 3 ⊢ (𝐵 ∈ ℂ → -𝐵 ∈ ℂ) | |
| 4 | mulcom 11115 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ -𝐵 ∈ ℂ) → (𝐴 · -𝐵) = (-𝐵 · 𝐴)) | |
| 5 | 3, 4 | sylan2 599 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · -𝐵) = (-𝐵 · 𝐴)) |
| 6 | mulcom 11115 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) = (𝐵 · 𝐴)) | |
| 7 | 6 | negeqd 11378 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → -(𝐴 · 𝐵) = -(𝐵 · 𝐴)) |
| 8 | 2, 5, 7 | 3eqtr4d 2784 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · -𝐵) = -(𝐴 · 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 (class class class)co 7356 ℂcc 11027 · cmul 11034 -cneg 11369 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-po 5526 df-so 5527 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-ltxr 11175 df-sub 11370 df-neg 11371 |
| This theorem is referenced by: mulneg12 11579 submul2 11581 mulsub 11584 mulneg2i 11588 mulneg2d 11595 mulle0b 12018 zmulcl 12567 binom2sub 14173 cjreb 15076 recj 15077 reneg 15078 imcj 15085 imneg 15086 ipcnval 15096 cjneg 15100 cnpart 15193 efexp 16059 efmival 16111 tanhbnd 16119 sinsub 16126 cossub 16127 odd2np1 16301 itgneg 25789 dvsincos 25966 sinperlem 26462 efimpi 26473 dcubic2 26826 dcubic 26828 dquart 26835 quartlem1 26839 asinlem2 26851 asinneg 26868 sinasin 26871 cosasin 26886 atanneg 26889 atanlogadd 26896 atanlogsub 26898 cosatan 26903 atantan 26905 atans2 26913 rpvmasum2 27493 ipasslem2 30921 dvasin 38071 pell1234qrdich 43306 rmxm1 43379 |
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