itgsincmulx - Mathbox for Glauco Siliprandi

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Theorem itgsincmulx 40759

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 2765	. . . . . . 7 ⊢ (𝑦 ∈ ℂ ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)) = (𝑦 ∈ ℂ ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))
2		itgsincmulx.a	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐴 ∈ ℂ)
3	2	adantr 472	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝐴 ∈ ℂ)
4		simpr 477	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝑦 ∈ ℂ)
5	3, 4	mulcld 10314	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (𝐴 · 𝑦) ∈ ℂ)
6	5	coscld 15145	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (cos‘(𝐴 · 𝑦)) ∈ ℂ)
7	6	negcld 10633	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(cos‘(𝐴 · 𝑦)) ∈ ℂ)
8		itgsincmulx.an0	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ≠ 0)
9	8	adantr 472	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → 𝐴 ≠ 0)
10	7, 3, 9	divcld 11055	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (-(cos‘(𝐴 · 𝑦)) / 𝐴) ∈ ℂ)
11		cnelprrecn 10282	. . . . . . . . . 10 ⊢ ℂ ∈ {ℝ, ℂ}
12	11	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℂ ∈ {ℝ, ℂ})
13	5	sincld 15144	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (sin‘(𝐴 · 𝑦)) ∈ ℂ)
14	13	negcld 10633	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(sin‘(𝐴 · 𝑦)) ∈ ℂ)
15	3, 14	mulcld 10314	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (𝐴 · -(sin‘(𝐴 · 𝑦))) ∈ ℂ)
16	15	negcld 10633	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -(𝐴 · -(sin‘(𝐴 · 𝑦))) ∈ ℂ)
17		dvcosax 40711	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ℂ → (ℂ D (𝑦 ∈ ℂ ↦ (cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ (𝐴 · -(sin‘(𝐴 · 𝑦)))))
18	2, 17	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ (cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ (𝐴 · -(sin‘(𝐴 · 𝑦)))))
19	12, 6, 15, 18	dvmptneg 24020	. . . . . . . . 9 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ -(cos‘(𝐴 · 𝑦)))) = (𝑦 ∈ ℂ ↦ -(𝐴 · -(sin‘(𝐴 · 𝑦)))))
20	12, 7, 16, 19, 2, 8	dvmptdivc 24019	. . . . . . . 8 ⊢ (𝜑 → (ℂ D (𝑦 ∈ ℂ ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))) = (𝑦 ∈ ℂ ↦ (-(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴)))
21	15, 3, 9	divnegd 11068	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = (-(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴))
22	21	eqcomd 2771	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (-(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴))
23	14, 3, 9	divcan3d 11060	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → ((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = -(sin‘(𝐴 · 𝑦)))
24	23	negeqd 10529	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → -((𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = --(sin‘(𝐴 · 𝑦)))
25	13	negnegd 10637	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → --(sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑦)))
26	22, 24, 25	3eqtrd 2803	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ ℂ) → (-(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴) = (sin‘(𝐴 · 𝑦)))
27	26	mpteq2dva 4903	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ ℂ ↦ (-(𝐴 · -(sin‘(𝐴 · 𝑦))) / 𝐴)) = (𝑦 ∈ ℂ ↦ (sin‘(𝐴 · 𝑦))))
28	20, 27	eqtrd 2799	. . . . . . 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 40704	. . . . . 6 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))) = (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))))
32	31	fveq1d 6377	. . . . 5 ⊢ (𝜑 → ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) = ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥))
33	32	adantr 472	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥) = ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥))
34		eqidd 2766	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) = (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))))
35		oveq2 6850	. . . . . . 7 ⊢ (𝑦 = 𝑥 → (𝐴 · 𝑦) = (𝐴 · 𝑥))
36	35	fveq2d 6379	. . . . . 6 ⊢ (𝑦 = 𝑥 → (sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑥)))
37	36	adantl 473	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) ∧ 𝑦 = 𝑥) → (sin‘(𝐴 · 𝑦)) = (sin‘(𝐴 · 𝑥)))
38		simpr 477	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ (𝐵(,)𝐶))
39	2	adantr 472	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝐴 ∈ ℂ)
40		ioosscn 40290	. . . . . . . 8 ⊢ (𝐵(,)𝐶) ⊆ ℂ
41	40, 38	sseldi 3759	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ ℂ)
42	39, 41	mulcld 10314	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (𝐴 · 𝑥) ∈ ℂ)
43	42	sincld 15144	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (sin‘(𝐴 · 𝑥)) ∈ ℂ)
44	34, 37, 38, 43	fvmptd 6477	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → ((𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦)))‘𝑥) = (sin‘(𝐴 · 𝑥)))
45	33, 44	eqtr2d 2800	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → (sin‘(𝐴 · 𝑥)) = ((ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)))‘𝑥))
46	45	itgeq2dv 23839	. 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 24489	. . . . . 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 3783	. . . . . . . 8 ⊢ ℂ ⊆ ℂ
52	51	a1i 11	. . . . . . 7 ⊢ (𝜑 → ℂ ⊆ ℂ)
53	50, 2, 52	constcncfg 40654	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ 𝐴) ∈ ((𝐵(,)𝐶)–cn→ℂ))
54	50, 52	idcncfg 40655	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ 𝑦) ∈ ((𝐵(,)𝐶)–cn→ℂ))
55	53, 54	mulcncf 23504	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (𝐴 · 𝑦)) ∈ ((𝐵(,)𝐶)–cn→ℂ))
56	49, 55	cncfmpt1f 22995	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ ((𝐵(,)𝐶)–cn→ℂ))
57	31, 56	eqeltrd 2844	. . 3 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))) ∈ ((𝐵(,)𝐶)–cn→ℂ))
58		ioossicc 12461	. . . . . 6 ⊢ (𝐵(,)𝐶) ⊆ (𝐵[,]𝐶)
59	58	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐵[,]𝐶))
60		ioombl 23623	. . . . . 6 ⊢ (𝐵(,)𝐶) ∈ dom vol
61	60	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ∈ dom vol)
62	2	adantr 472	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → 𝐴 ∈ ℂ)
63	29, 30	iccssred 40301	. . . . . . . . 9 ⊢ (𝜑 → (𝐵[,]𝐶) ⊆ ℝ)
64		ax-resscn 10246	. . . . . . . . 9 ⊢ ℝ ⊆ ℂ
65	63, 64	syl6ss 3773	. . . . . . . 8 ⊢ (𝜑 → (𝐵[,]𝐶) ⊆ ℂ)
66	65	sselda 3761	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → 𝑦 ∈ ℂ)
67	62, 66	mulcld 10314	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → (𝐴 · 𝑦) ∈ ℂ)
68	67	sincld 15144	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐵[,]𝐶)) → (sin‘(𝐴 · 𝑦)) ∈ ℂ)
69	65, 2, 52	constcncfg 40654	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝐴) ∈ ((𝐵[,]𝐶)–cn→ℂ))
70	65, 52	idcncfg 40655	. . . . . . . 8 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝑦) ∈ ((𝐵[,]𝐶)–cn→ℂ))
71	69, 70	mulcncf 23504	. . . . . . 7 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (𝐴 · 𝑦)) ∈ ((𝐵[,]𝐶)–cn→ℂ))
72	49, 71	cncfmpt1f 22995	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
73		cniccibl 23898	. . . . . 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 1490	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ 𝐿¹)
75	59, 61, 68, 74	iblss 23862	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵(,)𝐶) ↦ (sin‘(𝐴 · 𝑦))) ∈ 𝐿¹)
76	31, 75	eqeltrd 2844	. . 3 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))) ∈ 𝐿¹)
77		coscn 24490	. . . . . . 7 ⊢ cos ∈ (ℂ–cn→ℂ)
78	77	a1i 11	. . . . . 6 ⊢ (𝜑 → cos ∈ (ℂ–cn→ℂ))
79	78, 71	cncfmpt1f 22995	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (cos‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
80	79	negcncfg 40664	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ -(cos‘(𝐴 · 𝑦))) ∈ ((𝐵[,]𝐶)–cn→ℂ))
81	8	neneqd 2942	. . . . . . 7 ⊢ (𝜑 → ¬ 𝐴 = 0)
82		elsng 4348	. . . . . . . 8 ⊢ (𝐴 ∈ ℂ → (𝐴 ∈ {0} ↔ 𝐴 = 0))
83	2, 82	syl 17	. . . . . . 7 ⊢ (𝜑 → (𝐴 ∈ {0} ↔ 𝐴 = 0))
84	81, 83	mtbird 316	. . . . . 6 ⊢ (𝜑 → ¬ 𝐴 ∈ {0})
85	2, 84	eldifd 3743	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ (ℂ ∖ {0}))
86		difssd 3900	. . . . 5 ⊢ (𝜑 → (ℂ ∖ {0}) ⊆ ℂ)
87	65, 85, 86	constcncfg 40654	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ 𝐴) ∈ ((𝐵[,]𝐶)–cn→(ℂ ∖ {0})))
88	80, 87	divcncf 23505	. . 3 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)) ∈ ((𝐵[,]𝐶)–cn→ℂ))
89	29, 30, 47, 57, 76, 88	ftc2 24098	. 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 2766	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)) = (𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴)))
91		oveq2 6850	. . . . . . . . . 10 ⊢ (𝑦 = 𝐶 → (𝐴 · 𝑦) = (𝐴 · 𝐶))
92	91	fveq2d 6379	. . . . . . . . 9 ⊢ (𝑦 = 𝐶 → (cos‘(𝐴 · 𝑦)) = (cos‘(𝐴 · 𝐶)))
93	92	negeqd 10529	. . . . . . . 8 ⊢ (𝑦 = 𝐶 → -(cos‘(𝐴 · 𝑦)) = -(cos‘(𝐴 · 𝐶)))
94	93	oveq1d 6857	. . . . . . 7 ⊢ (𝑦 = 𝐶 → (-(cos‘(𝐴 · 𝑦)) / 𝐴) = (-(cos‘(𝐴 · 𝐶)) / 𝐴))
95	94	adantl 473	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = 𝐶) → (-(cos‘(𝐴 · 𝑦)) / 𝐴) = (-(cos‘(𝐴 · 𝐶)) / 𝐴))
96	29	rexrd 10343	. . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
97	30	rexrd 10343	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
98		ubicc2 12493	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 ≤ 𝐶) → 𝐶 ∈ (𝐵[,]𝐶))
99	96, 97, 47, 98	syl3anc 1490	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ (𝐵[,]𝐶))
100		ovexd 6876	. . . . . 6 ⊢ (𝜑 → (-(cos‘(𝐴 · 𝐶)) / 𝐴) ∈ V)
101	90, 95, 99, 100	fvmptd 6477	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐶) = (-(cos‘(𝐴 · 𝐶)) / 𝐴))
102		oveq2 6850	. . . . . . . . . 10 ⊢ (𝑦 = 𝐵 → (𝐴 · 𝑦) = (𝐴 · 𝐵))
103	102	fveq2d 6379	. . . . . . . . 9 ⊢ (𝑦 = 𝐵 → (cos‘(𝐴 · 𝑦)) = (cos‘(𝐴 · 𝐵)))
104	103	negeqd 10529	. . . . . . . 8 ⊢ (𝑦 = 𝐵 → -(cos‘(𝐴 · 𝑦)) = -(cos‘(𝐴 · 𝐵)))
105	104	oveq1d 6857	. . . . . . 7 ⊢ (𝑦 = 𝐵 → (-(cos‘(𝐴 · 𝑦)) / 𝐴) = (-(cos‘(𝐴 · 𝐵)) / 𝐴))
106	105	adantl 473	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 = 𝐵) → (-(cos‘(𝐴 · 𝑦)) / 𝐴) = (-(cos‘(𝐴 · 𝐵)) / 𝐴))
107		lbicc2 12492	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 ≤ 𝐶) → 𝐵 ∈ (𝐵[,]𝐶))
108	96, 97, 47, 107	syl3anc 1490	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ (𝐵[,]𝐶))
109		ovexd 6876	. . . . . 6 ⊢ (𝜑 → (-(cos‘(𝐴 · 𝐵)) / 𝐴) ∈ V)
110	90, 106, 108, 109	fvmptd 6477	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ (𝐵[,]𝐶) ↦ (-(cos‘(𝐴 · 𝑦)) / 𝐴))‘𝐵) = (-(cos‘(𝐴 · 𝐵)) / 𝐴))
111	101, 110	oveq12d 6860	. . . 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 10322	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ ℂ)
113	2, 112	mulcld 10314	. . . . . . . 8 ⊢ (𝜑 → (𝐴 · 𝐵) ∈ ℂ)
114	113	coscld 15145	. . . . . . 7 ⊢ (𝜑 → (cos‘(𝐴 · 𝐵)) ∈ ℂ)
115	114, 2, 8	divnegd 11068	. . . . . 6 ⊢ (𝜑 → -((cos‘(𝐴 · 𝐵)) / 𝐴) = (-(cos‘(𝐴 · 𝐵)) / 𝐴))
116	115	eqcomd 2771	. . . . 5 ⊢ (𝜑 → (-(cos‘(𝐴 · 𝐵)) / 𝐴) = -((cos‘(𝐴 · 𝐵)) / 𝐴))
117	116	oveq2d 6858	. . . 4 ⊢ (𝜑 → ((-(cos‘(𝐴 · 𝐶)) / 𝐴) − (-(cos‘(𝐴 · 𝐵)) / 𝐴)) = ((-(cos‘(𝐴 · 𝐶)) / 𝐴) − -((cos‘(𝐴 · 𝐵)) / 𝐴)))
118	30	recnd 10322	. . . . . . . . 9 ⊢ (𝜑 → 𝐶 ∈ ℂ)
119	2, 118	mulcld 10314	. . . . . . . 8 ⊢ (𝜑 → (𝐴 · 𝐶) ∈ ℂ)
120	119	coscld 15145	. . . . . . 7 ⊢ (𝜑 → (cos‘(𝐴 · 𝐶)) ∈ ℂ)
121	120	negcld 10633	. . . . . 6 ⊢ (𝜑 → -(cos‘(𝐴 · 𝐶)) ∈ ℂ)
122	121, 2, 8	divcld 11055	. . . . 5 ⊢ (𝜑 → (-(cos‘(𝐴 · 𝐶)) / 𝐴) ∈ ℂ)
123	114, 2, 8	divcld 11055	. . . . 5 ⊢ (𝜑 → ((cos‘(𝐴 · 𝐵)) / 𝐴) ∈ ℂ)
124	122, 123	subnegd 10653	. . . 4 ⊢ (𝜑 → ((-(cos‘(𝐴 · 𝐶)) / 𝐴) − -((cos‘(𝐴 · 𝐵)) / 𝐴)) = ((-(cos‘(𝐴 · 𝐶)) / 𝐴) + ((cos‘(𝐴 · 𝐵)) / 𝐴)))
125	111, 117, 124	3eqtrd 2803	. . 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 10492	. . 3 ⊢ (𝜑 → ((-(cos‘(𝐴 · 𝐶)) / 𝐴) + ((cos‘(𝐴 · 𝐵)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) + (-(cos‘(𝐴 · 𝐶)) / 𝐴)))
127	120, 2, 8	divnegd 11068	. . . . . 6 ⊢ (𝜑 → -((cos‘(𝐴 · 𝐶)) / 𝐴) = (-(cos‘(𝐴 · 𝐶)) / 𝐴))
128	127	eqcomd 2771	. . . . 5 ⊢ (𝜑 → (-(cos‘(𝐴 · 𝐶)) / 𝐴) = -((cos‘(𝐴 · 𝐶)) / 𝐴))
129	128	oveq2d 6858	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + (-(cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) + -((cos‘(𝐴 · 𝐶)) / 𝐴)))
130	120, 2, 8	divcld 11055	. . . . 5 ⊢ (𝜑 → ((cos‘(𝐴 · 𝐶)) / 𝐴) ∈ ℂ)
131	123, 130	negsubd 10652	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + -((cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)))
132	114, 120, 2, 8	divsubdird 11094	. . . . 5 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴) = (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)))
133	132	eqcomd 2771	. . . 4 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) − ((cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))
134	129, 131, 133	3eqtrd 2803	. . 3 ⊢ (𝜑 → (((cos‘(𝐴 · 𝐵)) / 𝐴) + (-(cos‘(𝐴 · 𝐶)) / 𝐴)) = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))
135	125, 126, 134	3eqtrd 2803	. 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 2803	1 ⊢ (𝜑 → ∫(𝐵(,)𝐶)(sin‘(𝐴 · 𝑥)) d𝑥 = (((cos‘(𝐴 · 𝐵)) − (cos‘(𝐴 · 𝐶))) / 𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 197 ∧ wa 384 = wceq 1652 ∈ wcel 2155 ≠ wne 2937 Vcvv 3350 ∖ cdif 3729 ⊆ wss 3732 {csn 4334 {cpr 4336 class class class wbr 4809 ↦ cmpt 4888 dom cdm 5277 ‘cfv 6068 (class class class)co 6842 ℂcc 10187 ℝcr 10188 0cc0 10189 + caddc 10192 · cmul 10194 ℝ^*cxr 10327 ≤ cle 10329 − cmin 10520 -cneg 10521 / cdiv 10938 (,)cioo 12377 [,]cicc 12380 sincsin 15078 cosccos 15079 –cn→ccncf 22958 volcvol 23521 𝐿¹cibl 23675 ∫citg 23676 D cdv 23918

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1890 ax-4 1904 ax-5 2005 ax-6 2070 ax-7 2105 ax-8 2157 ax-9 2164 ax-10 2183 ax-11 2198 ax-12 2211 ax-13 2352 ax-ext 2743 ax-rep 4930 ax-sep 4941 ax-nul 4949 ax-pow 5001 ax-pr 5062 ax-un 7147 ax-inf2 8753 ax-cc 9510 ax-cnex 10245 ax-resscn 10246 ax-1cn 10247 ax-icn 10248 ax-addcl 10249 ax-addrcl 10250 ax-mulcl 10251 ax-mulrcl 10252 ax-mulcom 10253 ax-addass 10254 ax-mulass 10255 ax-distr 10256 ax-i2m1 10257 ax-1ne0 10258 ax-1rid 10259 ax-rnegex 10260 ax-rrecex 10261 ax-cnre 10262 ax-pre-lttri 10263 ax-pre-lttrn 10264 ax-pre-ltadd 10265 ax-pre-mulgt0 10266 ax-pre-sup 10267 ax-addf 10268 ax-mulf 10269

This theorem depends on definitions: df-bi 198 df-an 385 df-or 874 df-3or 1108 df-3an 1109 df-tru 1656 df-fal 1666 df-ex 1875 df-nf 1879 df-sb 2063 df-mo 2565 df-eu 2582 df-clab 2752 df-cleq 2758 df-clel 2761 df-nfc 2896 df-ne 2938 df-nel 3041 df-ral 3060 df-rex 3061 df-reu 3062 df-rmo 3063 df-rab 3064 df-v 3352 df-sbc 3597 df-csb 3692 df-dif 3735 df-un 3737 df-in 3739 df-ss 3746 df-pss 3748 df-symdif 4005 df-nul 4080 df-if 4244 df-pw 4317 df-sn 4335 df-pr 4337 df-tp 4339 df-op 4341 df-uni 4595 df-int 4634 df-iun 4678 df-iin 4679 df-disj 4778 df-br 4810 df-opab 4872 df-mpt 4889 df-tr 4912 df-id 5185 df-eprel 5190 df-po 5198 df-so 5199 df-fr 5236 df-se 5237 df-we 5238 df-xp 5283 df-rel 5284 df-cnv 5285 df-co 5286 df-dm 5287 df-rn 5288 df-res 5289 df-ima 5290 df-pred 5865 df-ord 5911 df-on 5912 df-lim 5913 df-suc 5914 df-iota 6031 df-fun 6070 df-fn 6071 df-f 6072 df-f1 6073 df-fo 6074 df-f1o 6075 df-fv 6076 df-isom 6077 df-riota 6803 df-ov 6845 df-oprab 6846 df-mpt2 6847 df-of 7095 df-ofr 7096 df-om 7264 df-1st 7366 df-2nd 7367 df-supp 7498 df-wrecs 7610 df-recs 7672 df-rdg 7710 df-1o 7764 df-2o 7765 df-oadd 7768 df-omul 7769 df-er 7947 df-map 8062 df-pm 8063 df-ixp 8114 df-en 8161 df-dom 8162 df-sdom 8163 df-fin 8164 df-fsupp 8483 df-fi 8524 df-sup 8555 df-inf 8556 df-oi 8622 df-card 9016 df-acn 9019 df-cda 9243 df-pnf 10330 df-mnf 10331 df-xr 10332 df-ltxr 10333 df-le 10334 df-sub 10522 df-neg 10523 df-div 10939 df-nn 11275 df-2 11335 df-3 11336 df-4 11337 df-5 11338 df-6 11339 df-7 11340 df-8 11341 df-9 11342 df-n0 11539 df-z 11625 df-dec 11741 df-uz 11887 df-q 11990 df-rp 12029 df-xneg 12146 df-xadd 12147 df-xmul 12148 df-ioo 12381 df-ioc 12382 df-ico 12383 df-icc 12384 df-fz 12534 df-fzo 12674 df-fl 12801 df-mod 12877 df-seq 13009 df-exp 13068 df-fac 13265 df-bc 13294 df-hash 13322 df-shft 14094 df-cj 14126 df-re 14127 df-im 14128 df-sqrt 14262 df-abs 14263 df-limsup 14489 df-clim 14506 df-rlim 14507 df-sum 14704 df-ef 15082 df-sin 15084 df-cos 15085 df-struct 16134 df-ndx 16135 df-slot 16136 df-base 16138 df-sets 16139 df-ress 16140 df-plusg 16229 df-mulr 16230 df-starv 16231 df-sca 16232 df-vsca 16233 df-ip 16234 df-tset 16235 df-ple 16236 df-ds 16238 df-unif 16239 df-hom 16240 df-cco 16241 df-rest 16351 df-topn 16352 df-0g 16370 df-gsum 16371 df-topgen 16372 df-pt 16373 df-prds 16376 df-xrs 16430 df-qtop 16435 df-imas 16436 df-xps 16438 df-mre 16514 df-mrc 16515 df-acs 16517 df-mgm 17510 df-sgrp 17552 df-mnd 17563 df-submnd 17604 df-mulg 17810 df-cntz 18015 df-cmn 18461 df-psmet 20011 df-xmet 20012 df-met 20013 df-bl 20014 df-mopn 20015 df-fbas 20016 df-fg 20017 df-cnfld 20020 df-top 20978 df-topon 20995 df-topsp 21017 df-bases 21030 df-cld 21103 df-ntr 21104 df-cls 21105 df-nei 21182 df-lp 21220 df-perf 21221 df-cn 21311 df-cnp 21312 df-haus 21399 df-cmp 21470 df-tx 21645 df-hmeo 21838 df-fil 21929 df-fm 22021 df-flim 22022 df-flf 22023 df-xms 22404 df-ms 22405 df-tms 22406 df-cncf 22960 df-ovol 23522 df-vol 23523 df-mbf 23677 df-itg1 23678 df-itg2 23679 df-ibl 23680 df-itg 23681 df-0p 23728 df-limc 23921 df-dv 23922

This theorem is referenced by: sqwvfourb 41015

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