| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > sinval | Structured version Visualization version GIF version | ||
| Description: Value of the sine function. (Contributed by NM, 14-Mar-2005.) (Revised by Mario Carneiro, 10-Nov-2013.) |
| Ref | Expression |
|---|---|
| sinval | ⊢ (𝐴 ∈ ℂ → (sin‘𝐴) = (((exp‘(i · 𝐴)) − (exp‘( -i · 𝐴))) / (2 · i))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq2 7451 | . . . . 5 ⊢ (𝑥 = 𝐴 → (i · 𝑥) = (i · 𝐴)) | |
| 2 | 1 | fveq2d 6912 | . . . 4 ⊢ (𝑥 = 𝐴 → (exp‘(i · 𝑥)) = (exp‘(i · 𝐴))) |
| 3 | oveq2 7451 | . . . . 5 ⊢ (𝑥 = 𝐴 → ( -i · 𝑥) = ( -i · 𝐴)) | |
| 4 | 3 | fveq2d 6912 | . . . 4 ⊢ (𝑥 = 𝐴 → (exp‘( -i · 𝑥)) = (exp‘( -i · 𝐴))) |
| 5 | 2, 4 | oveq12d 7461 | . . 3 ⊢ (𝑥 = 𝐴 → ((exp‘(i · 𝑥)) − (exp‘( -i · 𝑥))) = ((exp‘(i · 𝐴)) − (exp‘( -i · 𝐴)))) |
| 6 | 5 | oveq1d 7458 | . 2 ⊢ (𝑥 = 𝐴 → (((exp‘(i · 𝑥)) − (exp‘( -i · 𝑥))) / (2 · i)) = (((exp‘(i · 𝐴)) − (exp‘( -i · 𝐴))) / (2 · i))) |
| 7 | df-sin 16264 | . 2 ⊢ sin = (𝑥 ∈ ℂ ↦ (((exp‘(i · 𝑥)) − (exp‘( -i · 𝑥))) / (2 · i))) | |
| 8 | ovex 7476 | . 2 ⊢ (((exp‘(i · 𝐴)) − (exp‘( -i · 𝐴))) / (2 · i)) ∈ V | |
| 9 | 6, 7, 8 | fvmpt 7016 | 1 ⊢ (𝐴 ∈ ℂ → (sin‘𝐴) = (((exp‘(i · 𝐴)) − (exp‘( -i · 𝐴))) / (2 · i))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ‘cfv 6558 (class class class)co 7443 ℂcc 11225 ici 11229 · cmul 11232 − cmin 11568 -cneg 11569 / cdiv 12000 2c2 12424 expce 16256 sincsin 16258 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-iota 6512 df-fun 6560 df-fv 6566 df-ov 7446 df-sin 16264 |
| This theorem is used by: tanval2 16330 resinval 16332 sinneg 16343 efival 16349 sinhval 16351 sinadd 16361 dvsincos 26331 sinper 26840 sineq0 26882 efeq1 26886 sinasin 27247 sineq0ALT 46110 |
| Copyright terms: Public domain | W3C validator |