itgsincmulx - Mathbox for Glauco Siliprandi

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Theorem itgsincmulx 47199

Description: Exercise: the integral of 𝑥 ↦ sin𝑎𝑥 on an open interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Hypotheses**
Ref	Expression
itgsincmulx.a	⊢ (𝜑 → 𝐴 ∈ ℂ)
itgsincmulx.an0	⊢ (𝜑 → 𝐴 ≠ 0)
itgsincmulx.b	⊢ (𝜑 → 𝐵 ∈ ℝ)
itgsincmulx.c	⊢ (𝜑 → 𝐶 ∈ ℝ)
itgsincmulx.blec	⊢ (𝜑 → 𝐵 ≤ 𝐶)

**Assertion**
Ref	Expression
itgsincmulx	⊢ (𝜑 → ∫(𝐵(,)𝐶)(sin‘(𝐴 · 𝑥)) d𝑥 = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))

Distinct variable groups: 𝑥,𝐴 𝑥,𝐵 𝑥,𝐶 𝜑,𝑥

Proof of Theorem itgsincmulx Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2763	. . . . . . 7 ⊢ (𝑦 ∈ ℂ ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)) = (𝑦 ∈ ℂ ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))
2		itgsincmulx.a	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐴 ∈ ℂ)
3	2	adantr 486	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝐴 ∈ ℂ)
4		simpr 490	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝑦 ∈ ℂ)
5	3, 4	mulcld 11359	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (𝐴 · 𝑦) ∈ ℂ)
6	5	coscld 16331	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (cos‘(𝐴 · 𝑦)) ∈ ℂ)
7	6	negcld 11686	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(cos‘(𝐴 · 𝑦)) ∈ ℂ)
8		itgsincmulx.an0	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ≠ 0)
9	8	adantr 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝐴 ≠ 0)
10	7, 3, 9	divcld 12123	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → ( -(cos‘(𝐴 · 𝑦)) / 𝐴) ∈ ℂ)
11		cnelprrecn 11323	. . . . . . . . . 10 ⊢ ℂ ∈ {ℝ, ℂ}
12	11	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℂ ∈ {ℝ, ℂ})
13	5	sincld 16330	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (sin‘(𝐴 · 𝑦)) ∈ ℂ)
14	13	negcld 11686	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(sin‘(𝐴 · 𝑦)) ∈ ℂ)
15	3, 14	mulcld 11359	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (𝐴 · -(sin‘(𝐴 · 𝑦))) ∈ ℂ)
16	15	negcld 11686	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(𝐴 · -(sin‘(𝐴 · 𝑦))) ∈ ℂ)
17		dvcosax 47151	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ℂ → (ℂ D (𝑦 ∈ ℂ ↦ (cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ (𝐴 · -(sin‘(𝐴 · 𝑦)))))
18	2, 17	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ (cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ (𝐴 · -(sin‘(𝐴 · 𝑦)))))
19	12, 6, 15, 18	dvmptneg 26319	. . . . . . . . 9 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ -(cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ -(𝐴 · -(sin‘(𝐴 · 𝑦)))))
20	12, 7, 16, 19, 2, 8	dvmptdivc 26318	. . . . . . . 8 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))) = (𝑦 ∈ ℂ ↦ ( -(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴)))
21	15, 3, 9	divnegd 12136	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = ( -(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴))
22	21	eqcomd 2769	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → ( -(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴))
23	14, 3, 9	divcan3d 12128	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → ((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = -(sin‘(𝐴 · 𝑦)))
24	23	negeqd 11581	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = - -(sin‘(𝐴 · 𝑦)))
25	13	negnegd 11690	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → - -(sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑦)))
26	22, 24, 25	3eqtrd 2802	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → ( -(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = (sin‘(𝐴 · 𝑦)))
27	26	mpteq2dva 5202	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ ℂ ↦ ( -(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴)) = (𝑦 ∈ ℂ ↦ (sin‘(𝐴 · 𝑦))))
28	20, 27	eqtrd 2798	. . . . . . 7 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))) = (𝑦 ∈ ℂ ↦ (sin‘(𝐴 · 𝑦))))
29		itgsincmulx.b	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ)
30		itgsincmulx.c	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℝ)
31	1, 10, 28, 13, 29, 30	dvmptresicc 26269	. . . . . 6 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))) = (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))))
32	31	fveq1d 6913	. . . . 5 ⊢ (𝜑 → ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) = ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥))
33	32	adantr 486	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) = ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥))
34		eqidd 2764	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) = (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))))
35		oveq2 7454	. . . . . . 7 ⊢ (𝑦 = 𝑥 → (𝐴 · 𝑦) = (𝐴 · 𝑥))
36	35	fveq2d 6915	. . . . . 6 ⊢ (𝑦 = 𝑥 → (sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑥)))
37	36	adantl 487	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) ∧ 𝑦 = 𝑥) → (sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑥)))
38		simpr 490	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ (𝐵(,)𝐶))
39	2	adantr 486	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝐴 ∈ ℂ)
40		ioosscn 13569	. . . . . . . 8 ⊢ (𝐵(,)𝐶) ⊆ ℂ
41	40, 38	sselid 3911	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ ℂ)
42	39, 41	mulcld 11359	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (𝐴 · 𝑥) ∈ ℂ)
43	42	sincld 16330	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (sin‘(𝐴 · 𝑥)) ∈ ℂ)
44	34, 37, 38, 43	fvmptd 7027	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥) = (sin‘(𝐴 · 𝑥)))
45	33, 44	eqtr2d 2799	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (sin‘(𝐴 · 𝑥)) = ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥))
46	45	itgeq2dv 26135	. 2 ⊢ (𝜑 → ∫(𝐵(,)𝐶)(sin‘(𝐴 · 𝑥)) d𝑥 = ∫(𝐵(,)𝐶)((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) d𝑥)
47		itgsincmulx.blec	. . 3 ⊢ (𝜑 → 𝐵 ≤ 𝐶)
48		sincn 26804	. . . . . 6 ⊢ sin ∈ (ℂ–cn→ℂ)
49	48	a1i 11	. . . . 5 ⊢ (𝜑 → sin ∈ (ℂ–cn→ℂ))
50	40	a1i 11	. . . . . . 7 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ ℂ)
51		ssid 3935	. . . . . . . 8 ⊢ ℂ ⊆ ℂ
52	51	a1i 11	. . . . . . 7 ⊢ (𝜑 → ℂ ⊆ ℂ)
53	50, 2, 52	constcncfg 47097	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ 𝐴) ∈ ((𝐵(,)𝐶)–cn→ℂ))
54	50, 52	idcncfg 47098	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ 𝑦) ∈ ((𝐵(,)𝐶)–cn→ℂ))
55	53, 54	mulcncf 25800	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (𝐴 · 𝑦)) ∈ ((𝐵(,)𝐶)–cn→ℂ))
56	49, 55	cncfmpt1f 25268	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ ((𝐵(,)𝐶)–cn→ℂ))
57	31, 56	eqeltrd 2864	. . 3 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))) ∈ ((𝐵(,)𝐶)–cn→ℂ))
58		ioossicc 13594	. . . . . 6 ⊢ (𝐵(,)𝐶) ⊆ (𝐵[,]𝐶)
59	58	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐵[,]𝐶))
60		ioombl 25919	. . . . . 6 ⊢ (𝐵(,)𝐶) ∈ dom vol
61	60	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ∈ dom vol)
62	2	adantr 486	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → 𝐴 ∈ ℂ)
63	29, 30	iccssred 13595	. . . . . . . . 9 ⊢ (𝜑 → (𝐵[,]𝐶) ⊆ ℝ)
64		ax-resscn 11287	. . . . . . . . 9 ⊢ ℝ ⊆ ℂ
65	63, 64	sstrdi 3925	. . . . . . . 8 ⊢ (𝜑 → (𝐵[,]𝐶) ⊆ ℂ)
66	65	sselda 3913	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → 𝑦 ∈ ℂ)
67	62, 66	mulcld 11359	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → (𝐴 · 𝑦) ∈ ℂ)
68	67	sincld 16330	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → (sin‘(𝐴 · 𝑦)) ∈ ℂ)
69	65, 2, 52	constcncfg 47097	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝐴) ∈ ((𝐵[,]𝐶)–cn→ℂ))
70	65, 52	idcncfg 47098	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝑦) ∈ ((𝐵[,]𝐶)–cn→ℂ))
71	69, 70	mulcncf 25800	. . . . . . 7 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (𝐴 · 𝑦)) ∈ ((𝐵[,]𝐶)–cn→ℂ))
72	49, 71	cncfmpt1f 25268	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
73		cniccibl 26194	. . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ ∧ (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ)) → (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ 𝐿¹)
74	29, 30, 72, 73	syl3anc 1399	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ 𝐿¹)
75	59, 61, 68, 74	iblss 26158	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ 𝐿¹)
76	31, 75	eqeltrd 2864	. . 3 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))) ∈ 𝐿¹)
77		coscn 26805	. . . . . . 7 ⊢ cos ∈ (ℂ–cn→ℂ)
78	77	a1i 11	. . . . . 6 ⊢ (𝜑 → cos ∈ (ℂ–cn→ℂ))
79	78, 71	cncfmpt1f 25268	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (cos‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
80	79	negcncfg 47106	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ -(cos‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
81	8	neneqd 2964	. . . . . . 7 ⊢ (𝜑 → ¬ 𝐴 = 0)
82		elsng 4598	. . . . . . . 8 ⊢ (𝐴 ∈ ℂ → (𝐴 ∈ {0} ↔ 𝐴 = 0))
83	2, 82	syl 18	. . . . . . 7 ⊢ (𝜑 → (𝐴 ∈ {0} ↔ 𝐴 = 0))
84	81, 83	mtbird 328	. . . . . 6 ⊢ (𝜑 → ¬ 𝐴 ∈ {0})
85	2, 84	eldifd 4053	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ (ℂ ∖ {0}))
86		difssd 4076	. . . . 5 ⊢ (𝜑 → (ℂ ∖ {0}) ⊆ ℂ)
87	65, 85, 86	constcncfg 47097	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝐴) ∈ ((𝐵[,]𝐶)–cn→(ℂ ∖ {0})))
88	80, 87	divcncf 25801	. . 3 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)) ∈ ((𝐵[,]𝐶)–cn→ℂ))
89	29, 30, 47, 57, 76, 88	ftc2 26397	. 2 ⊢ (𝜑 → ∫(𝐵(,)𝐶)((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) d𝑥 = (((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) − ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵)))
90		eqidd 2764	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)) = (𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴)))
91		oveq2 7454	. . . . . . . . . 10 ⊢ (𝑦 = 𝐶 → (𝐴 · 𝑦) = (𝐴 · 𝐶))
92	91	fveq2d 6915	. . . . . . . . 9 ⊢ (𝑦 = 𝐶 → (cos‘(𝐴 · 𝑦)) = (cos‘(𝐴 · 𝐶)))
93	92	negeqd 11581	. . . . . . . 8 ⊢ (𝑦 = 𝐶 → -(cos‘(𝐴 · 𝑦)) = -(cos‘(𝐴 · 𝐶)))
94	93	oveq1d 7461	. . . . . . 7 ⊢ (𝑦 = 𝐶 → ( -(cos‘(𝐴 · 𝑦)) / 𝐴) = ( -(cos‘(𝐴 · 𝐶)) / 𝐴))
95	94	adantl 487	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = 𝐶) → ( -(cos‘(𝐴 · 𝑦)) / 𝐴) = ( -(cos‘(𝐴 · 𝐶)) / 𝐴))
96	29	rexrd 11389	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
97	30	rexrd 11389	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
98		ubicc2 13626	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 ≤ 𝐶) → 𝐶 ∈ (𝐵[,]𝐶))
99	96, 97, 47, 98	syl3anc 1399	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ (𝐵[,]𝐶))
100		ovexd 7481	. . . . . 6 ⊢ (𝜑 → ( -(cos‘(𝐴 · 𝐶)) / 𝐴) ∈ V)
101	90, 95, 99, 100	fvmptd 7027	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) = ( -(cos‘(𝐴 · 𝐶)) / 𝐴))
102		oveq2 7454	. . . . . . . . . 10 ⊢ (𝑦 = 𝐵 → (𝐴 · 𝑦) = (𝐴 · 𝐵))
103	102	fveq2d 6915	. . . . . . . . 9 ⊢ (𝑦 = 𝐵 → (cos‘(𝐴 · 𝑦)) = (cos‘(𝐴 · 𝐵)))
104	103	negeqd 11581	. . . . . . . 8 ⊢ (𝑦 = 𝐵 → -(cos‘(𝐴 · 𝑦)) = -(cos‘(𝐴 · 𝐵)))
105	104	oveq1d 7461	. . . . . . 7 ⊢ (𝑦 = 𝐵 → ( -(cos‘(𝐴 · 𝑦)) / 𝐴) = ( -(cos‘(𝐴 · 𝐵)) / 𝐴))
106	105	adantl 487	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = 𝐵) → ( -(cos‘(𝐴 · 𝑦)) / 𝐴) = ( -(cos‘(𝐴 · 𝐵)) / 𝐴))
107		lbicc2 13625	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 ≤ 𝐶) → 𝐵 ∈ (𝐵[,]𝐶))
108	96, 97, 47, 107	syl3anc 1399	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ (𝐵[,]𝐶))
109		ovexd 7481	. . . . . 6 ⊢ (𝜑 → ( -(cos‘(𝐴 · 𝐵)) / 𝐴) ∈ V)
110	90, 106, 108, 109	fvmptd 7027	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵) = ( -(cos‘(𝐴 · 𝐵)) / 𝐴))
111	101, 110	oveq12d 7464	. . . 4 ⊢ (𝜑 → (((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) − ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵)) = (( -(cos‘(𝐴 · 𝐶)) / 𝐴) − ( -(cos‘(𝐴 · 𝐵)) / 𝐴)))
112	29	recnd 11367	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ ℂ)
113	2, 112	mulcld 11359	. . . . . . . 8 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℂ)
114	113	coscld 16331	. . . . . . 7 ⊢ (𝜑 → (cos‘(𝐴 · 𝐵)) ∈ ℂ)
115	114, 2, 8	divnegd 12136	. . . . . 6 ⊢ (𝜑 → -((cos‘(𝐴 · 𝐵)) / 𝐴) = ( -(cos‘(𝐴 · 𝐵)) / 𝐴))
116	115	eqcomd 2769	. . . . 5 ⊢ (𝜑 → ( -(cos‘(𝐴 · 𝐵)) / 𝐴) = -((cos‘(𝐴 · 𝐵)) / 𝐴))
117	116	oveq2d 7462	. . . 4 ⊢ (𝜑 → (( -(cos‘(𝐴 · 𝐶)) / 𝐴) − ( -(cos‘(𝐴 · 𝐵)) / 𝐴)) = (( -(cos‘(𝐴 · 𝐶)) / 𝐴) − -((cos‘(𝐴 · 𝐵)) / 𝐴)))
118	30	recnd 11367	. . . . . . . . 9 ⊢ (𝜑 → 𝐶 ∈ ℂ)
119	2, 118	mulcld 11359	. . . . . . . 8 ⊢ (𝜑 → (𝐴 · 𝐶) ∈ ℂ)
120	119	coscld 16331	. . . . . . 7 ⊢ (𝜑 → (cos‘(𝐴 · 𝐶)) ∈ ℂ)
121	120	negcld 11686	. . . . . 6 ⊢ (𝜑 → -(cos‘(𝐴 · 𝐶)) ∈ ℂ)
122	121, 2, 8	divcld 12123	. . . . 5 ⊢ (𝜑 → ( -(cos‘(𝐴 · 𝐶)) / 𝐴) ∈ ℂ)
123	114, 2, 8	divcld 12123	. . . . 5 ⊢ (𝜑 → ((cos‘(𝐴 · 𝐵)) / 𝐴) ∈ ℂ)
124	122, 123	subnegd 11706	. . . 4 ⊢ (𝜑 → (( -(cos‘(𝐴 · 𝐶)) / 𝐴) − -((cos‘(𝐴 · 𝐵)) / 𝐴)) = (( -(cos‘(𝐴 · 𝐶)) / 𝐴) + ((cos‘(𝐴 · 𝐵)) / 𝐴)))
125	111, 117, 124	3eqtrd 2802	. . 3 ⊢ (𝜑 → (((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) − ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵)) = (( -(cos‘(𝐴 · 𝐶)) / 𝐴) + ((cos‘(𝐴 · 𝐵)) / 𝐴)))
126	122, 123	addcomd 11542	. . 3 ⊢ (𝜑 → (( -(cos‘(𝐴 · 𝐶)) / 𝐴) + ((cos‘(𝐴 · 𝐵)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) + ( -(cos‘(𝐴 · 𝐶)) / 𝐴)))
127	120, 2, 8	divnegd 12136	. . . . . 6 ⊢ (𝜑 → -((cos‘(𝐴 · 𝐶)) / 𝐴) = ( -(cos‘(𝐴 · 𝐶)) / 𝐴))
128	127	eqcomd 2769	. . . . 5 ⊢ (𝜑 → ( -(cos‘(𝐴 · 𝐶)) / 𝐴) = -((cos‘(𝐴 · 𝐶)) / 𝐴))
129	128	oveq2d 7462	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + ( -(cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) + -((cos‘(𝐴 · 𝐶)) / 𝐴)))
130	120, 2, 8	divcld 12123	. . . . 5 ⊢ (𝜑 → ((cos‘(𝐴 · 𝐶)) / 𝐴) ∈ ℂ)
131	123, 130	negsubd 11705	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + -((cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)))
132	114, 120, 2, 8	divsubdird 12162	. . . . 5 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴) = (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)))
133	132	eqcomd 2769	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))
134	129, 131, 133	3eqtrd 2802	. . 3 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + ( -(cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))
135	125, 126, 134	3eqtrd 2802	. 2 ⊢ (𝜑 → (((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) − ((𝑦 ∈ (𝐵[,]𝐶) ↦ ( -(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵)) = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))
136	46, 89, 135	3eqtrd 2802	1 ⊢ (𝜑 → ∫(𝐵(,)𝐶)(sin‘(𝐴 · 𝑥)) d𝑥 = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 Vcvv 3454 ⊆ wss 3900 ∖ cdif 4048 {csn 4588 {cpr 4590 class class class wbr 5106 ↦ cmpt 5190 dom cdm 5656 ‘cfv 6561 (class class class)co 7446 ℂcc 11228 ℝcr 11229 0cc0 11230 + caddc 11233 · cmul 11235 ℝ^*cxr 11372 ≤ cle 11374 − cmin 11571 -cneg 11572 / cdiv 12003 (,)cioo 13506 [,]cicc 13509 sincsin 16261 cosccos 16262 –cn→ccncf 25230 volcvol 25817 𝐿¹cibl 25971 ∫citg 25972 D cdv 26216

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-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-inf2 9672 ax-cc 10543 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 ax-pre-sup 11308 ax-addf 11309

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 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-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-symdif 4201 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-iin 4957 df-disj 5074 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-se 5610 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-isom 6570 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-of 7720 df-ofr 7721 df-om 7905 df-1st 8028 df-2nd 8029 df-supp 8208 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-1o 8507 df-2o 8508 df-oadd 8511 df-omul 8512 df-er 8748 df-map 8880 df-pm 8881 df-ixp 8957 df-en 9005 df-dom 9006 df-sdom 9007 df-fin 9008 df-fsupp 9385 df-fi 9433 df-sup 9464 df-inf 9465 df-oi 9534 df-dju 10012 df-card 10050 df-acn 10053 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-div 12004 df-nn 12366 df-2 12435 df-3 12436 df-4 12437 df-5 12438 df-6 12439 df-7 12440 df-8 12441 df-9 12442 df-n0 12637 df-z 12724 df-dec 12845 df-uz 12996 df-q 13106 df-rp 13151 df-xneg 13271 df-xadd 13272 df-xmul 13273 df-ioo 13510 df-ioc 13511 df-ico 13512 df-icc 13513 df-fz 13670 df-fzo 13819 df-fl 13962 df-mod 14040 df-seq 14175 df-exp 14235 df-fac 14448 df-bc 14477 df-hash 14505 df-shft 15252 df-cj 15298 df-re 15299 df-im 15300 df-sqrt 15434 df-abs 15435 df-limsup 15670 df-clim 15687 df-rlim 15688 df-sum 15886 df-ef 16265 df-sin 16267 df-cos 16268 df-struct 17357 df-sets 17374 df-slot 17392 df-ndx 17404 df-base 17420 df-ress 17441 df-plusg 17473 df-mulr 17474 df-starv 17475 df-sca 17476 df-vsca 17477 df-ip 17478 df-tset 17479 df-ple 17480 df-ds 17482 df-unif 17483 df-hom 17484 df-cco 17485 df-rest 17625 df-topn 17626 df-0g 17644 df-gsum 17645 df-topgen 17646 df-pt 17647 df-prds 17650 df-xrs 17706 df-qtop 17711 df-imas 17712 df-xps 17714 df-mre 17788 df-mrc 17789 df-acs 17791 df-mgm 18848 df-sgrp 18940 df-mnd 18956 df-submnd 19011 df-mulg 19310 df-cntz 19564 df-cmn 20029 df-psmet 21703 df-xmet 21704 df-met 21705 df-bl 21706 df-mopn 21707 df-fbas 21708 df-fg 21709 df-cnfld 21712 df-top 23245 df-topon 23262 df-topsp 23284 df-bases 23297 df-cld 23370 df-ntr 23371 df-cls 23372 df-nei 23449 df-lp 23487 df-perf 23488 df-cn 23578 df-cnp 23579 df-haus 23666 df-cmp 23738 df-tx 23914 df-hmeo 24107 df-fil 24198 df-fm 24290 df-flim 24291 df-flf 24292 df-xms 24672 df-ms 24673 df-tms 24674 df-cncf 25232 df-ovol 25818 df-vol 25819 df-mbf 25973 df-itg1 25974 df-itg2 25975 df-ibl 25976 df-itg 25977 df-0p 26024 df-limc 26219 df-dv 26220

This theorem is used by: sqwvfourb 47454

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