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Mirrors > Home > MPE Home > Th. List > mulsubd | Structured version Visualization version GIF version |
Description: Product of two differences. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
mulm1d.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
mulnegd.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
subdid.3 | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
muladdd.4 | ⊢ (𝜑 → 𝐷 ∈ ℂ) |
Ref | Expression |
---|---|
mulsubd | ⊢ (𝜑 → ((𝐴 − 𝐵) · (𝐶 − 𝐷)) = (((𝐴 · 𝐶) + (𝐷 · 𝐵)) − ((𝐴 · 𝐷) + (𝐶 · 𝐵)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mulm1d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
2 | mulnegd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
3 | subdid.3 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
4 | muladdd.4 | . 2 ⊢ (𝜑 → 𝐷 ∈ ℂ) | |
5 | mulsub 11528 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) ∧ (𝐶 ∈ ℂ ∧ 𝐷 ∈ ℂ)) → ((𝐴 − 𝐵) · (𝐶 − 𝐷)) = (((𝐴 · 𝐶) + (𝐷 · 𝐵)) − ((𝐴 · 𝐷) + (𝐶 · 𝐵)))) | |
6 | 1, 2, 3, 4, 5 | syl22anc 837 | 1 ⊢ (𝜑 → ((𝐴 − 𝐵) · (𝐶 − 𝐷)) = (((𝐴 · 𝐶) + (𝐷 · 𝐵)) − ((𝐴 · 𝐷) + (𝐶 · 𝐵)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 (class class class)co 7346 ℂcc 10979 + caddc 10984 · cmul 10986 − cmin 11315 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2708 ax-sep 5251 ax-nul 5258 ax-pow 5315 ax-pr 5379 ax-un 7659 ax-resscn 11038 ax-1cn 11039 ax-icn 11040 ax-addcl 11041 ax-addrcl 11042 ax-mulcl 11043 ax-mulrcl 11044 ax-mulcom 11045 ax-addass 11046 ax-mulass 11047 ax-distr 11048 ax-i2m1 11049 ax-1ne0 11050 ax-1rid 11051 ax-rnegex 11052 ax-rrecex 11053 ax-cnre 11054 ax-pre-lttri 11055 ax-pre-lttrn 11056 ax-pre-ltadd 11057 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3352 df-rab 3406 df-v 3445 df-sbc 3735 df-csb 3851 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4278 df-if 4482 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4861 df-br 5101 df-opab 5163 df-mpt 5184 df-id 5525 df-po 5539 df-so 5540 df-xp 5633 df-rel 5634 df-cnv 5635 df-co 5636 df-dm 5637 df-rn 5638 df-res 5639 df-ima 5640 df-iota 6440 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7302 df-ov 7349 df-oprab 7350 df-mpo 7351 df-er 8578 df-en 8814 df-dom 8815 df-sdom 8816 df-pnf 11121 df-mnf 11122 df-ltxr 11124 df-sub 11317 df-neg 11318 |
This theorem is referenced by: sinadd 15977 cosadd 15978 pellexlem6 40969 pell1234qrmulcl 40990 smfmullem1 44718 |
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