Proof of Theorem asinlem3
Step | Hyp | Ref
| Expression |
1 | | 0red 10979 |
. 2
⊢ (𝐴 ∈ ℂ → 0 ∈
ℝ) |
2 | | imcl 14820 |
. 2
⊢ (𝐴 ∈ ℂ →
(ℑ‘𝐴) ∈
ℝ) |
3 | | ax-icn 10931 |
. . . . . . . . 9
⊢ i ∈
ℂ |
4 | | negcl 11221 |
. . . . . . . . . 10
⊢ (𝐴 ∈ ℂ → -𝐴 ∈
ℂ) |
5 | 4 | adantr 481 |
. . . . . . . . 9
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
-𝐴 ∈
ℂ) |
6 | | mulcl 10956 |
. . . . . . . . 9
⊢ ((i
∈ ℂ ∧ -𝐴
∈ ℂ) → (i · -𝐴) ∈ ℂ) |
7 | 3, 5, 6 | sylancr 587 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(i · -𝐴) ∈
ℂ) |
8 | | ax-1cn 10930 |
. . . . . . . . . 10
⊢ 1 ∈
ℂ |
9 | 5 | sqcld 13860 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(-𝐴↑2) ∈
ℂ) |
10 | | subcl 11220 |
. . . . . . . . . 10
⊢ ((1
∈ ℂ ∧ (-𝐴↑2) ∈ ℂ) → (1 −
(-𝐴↑2)) ∈
ℂ) |
11 | 8, 9, 10 | sylancr 587 |
. . . . . . . . 9
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 − (-𝐴↑2))
∈ ℂ) |
12 | 11 | sqrtcld 15147 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(√‘(1 − (-𝐴↑2))) ∈ ℂ) |
13 | 7, 12 | addcld 10995 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((i · -𝐴) +
(√‘(1 − (-𝐴↑2)))) ∈ ℂ) |
14 | | asinlem 26016 |
. . . . . . . 8
⊢ (-𝐴 ∈ ℂ → ((i
· -𝐴) +
(√‘(1 − (-𝐴↑2)))) ≠ 0) |
15 | 5, 14 | syl 17 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((i · -𝐴) +
(√‘(1 − (-𝐴↑2)))) ≠ 0) |
16 | 13, 15 | absrpcld 15158 |
. . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(abs‘((i · -𝐴)
+ (√‘(1 − (-𝐴↑2))))) ∈
ℝ+) |
17 | | 2z 12352 |
. . . . . 6
⊢ 2 ∈
ℤ |
18 | | rpexpcl 13799 |
. . . . . 6
⊢
(((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))) ∈
ℝ+ ∧ 2 ∈ ℤ) → ((abs‘((i ·
-𝐴) + (√‘(1
− (-𝐴↑2)))))↑2) ∈
ℝ+) |
19 | 16, 17, 18 | sylancl 586 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2) ∈
ℝ+) |
20 | 19 | rprecred 12782 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 / ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ∈
ℝ) |
21 | 13 | cjcld 14905 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))) ∈
ℂ) |
22 | 21 | recld 14903 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))) ∈
ℝ) |
23 | 19 | rpreccld 12781 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 / ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ∈
ℝ+) |
24 | 23 | rpge0d 12775 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 0
≤ (1 / ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2))) |
25 | | imneg 14842 |
. . . . . . . 8
⊢ (𝐴 ∈ ℂ →
(ℑ‘-𝐴) =
-(ℑ‘𝐴)) |
26 | 25 | adantr 481 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℑ‘-𝐴) =
-(ℑ‘𝐴)) |
27 | 2 | le0neg2d 11547 |
. . . . . . . 8
⊢ (𝐴 ∈ ℂ → (0 ≤
(ℑ‘𝐴) ↔
-(ℑ‘𝐴) ≤
0)) |
28 | 27 | biimpa 477 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
-(ℑ‘𝐴) ≤
0) |
29 | 26, 28 | eqbrtrd 5101 |
. . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℑ‘-𝐴) ≤
0) |
30 | | asinlem3a 26018 |
. . . . . 6
⊢ ((-𝐴 ∈ ℂ ∧
(ℑ‘-𝐴) ≤ 0)
→ 0 ≤ (ℜ‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))) |
31 | 5, 29, 30 | syl2anc 584 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 0
≤ (ℜ‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))) |
32 | 13 | recjd 14913 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))) =
(ℜ‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))) |
33 | 31, 32 | breqtrrd 5107 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 0
≤ (ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))))) |
34 | 20, 22, 24, 33 | mulge0d 11552 |
. . 3
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 0
≤ ((1 / ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))))) |
35 | | recval 15032 |
. . . . . . 7
⊢ ((((i
· -𝐴) +
(√‘(1 − (-𝐴↑2)))) ∈ ℂ ∧ ((i
· -𝐴) +
(√‘(1 − (-𝐴↑2)))) ≠ 0) → (1 / ((i ·
-𝐴) + (√‘(1
− (-𝐴↑2))))) =
((∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))) / ((abs‘((i
· -𝐴) +
(√‘(1 − (-𝐴↑2)))))↑2))) |
36 | 13, 15, 35 | syl2anc 584 |
. . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 / ((i · -𝐴) +
(√‘(1 − (-𝐴↑2))))) = ((∗‘((i ·
-𝐴) + (√‘(1
− (-𝐴↑2))))) /
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2))) |
37 | | asinlem2 26017 |
. . . . . . . . 9
⊢ (𝐴 ∈ ℂ → (((i
· 𝐴) +
(√‘(1 − (𝐴↑2)))) · ((i · -𝐴) + (√‘(1 −
(-𝐴↑2))))) =
1) |
38 | 37 | adantr 481 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(((i · 𝐴) +
(√‘(1 − (𝐴↑2)))) · ((i · -𝐴) + (√‘(1 −
(-𝐴↑2))))) =
1) |
39 | 38 | eqcomd 2746 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 1
= (((i · 𝐴) +
(√‘(1 − (𝐴↑2)))) · ((i · -𝐴) + (√‘(1 −
(-𝐴↑2)))))) |
40 | | 1cnd 10971 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 1
∈ ℂ) |
41 | | simpl 483 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
𝐴 ∈
ℂ) |
42 | | mulcl 10956 |
. . . . . . . . . 10
⊢ ((i
∈ ℂ ∧ 𝐴
∈ ℂ) → (i · 𝐴) ∈ ℂ) |
43 | 3, 41, 42 | sylancr 587 |
. . . . . . . . 9
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(i · 𝐴) ∈
ℂ) |
44 | | sqcl 13836 |
. . . . . . . . . . . 12
⊢ (𝐴 ∈ ℂ → (𝐴↑2) ∈
ℂ) |
45 | 44 | adantr 481 |
. . . . . . . . . . 11
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(𝐴↑2) ∈
ℂ) |
46 | | subcl 11220 |
. . . . . . . . . . 11
⊢ ((1
∈ ℂ ∧ (𝐴↑2) ∈ ℂ) → (1 −
(𝐴↑2)) ∈
ℂ) |
47 | 8, 45, 46 | sylancr 587 |
. . . . . . . . . 10
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 − (𝐴↑2))
∈ ℂ) |
48 | 47 | sqrtcld 15147 |
. . . . . . . . 9
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(√‘(1 − (𝐴↑2))) ∈ ℂ) |
49 | 43, 48 | addcld 10995 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((i · 𝐴) +
(√‘(1 − (𝐴↑2)))) ∈ ℂ) |
50 | 40, 49, 13, 15 | divmul3d 11785 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((1 / ((i · -𝐴) +
(√‘(1 − (-𝐴↑2))))) = ((i · 𝐴) + (√‘(1 −
(𝐴↑2)))) ↔ 1 =
(((i · 𝐴) +
(√‘(1 − (𝐴↑2)))) · ((i · -𝐴) + (√‘(1 −
(-𝐴↑2))))))) |
51 | 39, 50 | mpbird 256 |
. . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(1 / ((i · -𝐴) +
(√‘(1 − (-𝐴↑2))))) = ((i · 𝐴) + (√‘(1 −
(𝐴↑2))))) |
52 | 19 | rpcnd 12773 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2) ∈
ℂ) |
53 | 19 | rpne0d 12776 |
. . . . . . 7
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2) ≠
0) |
54 | 21, 52, 53 | divrec2d 11755 |
. . . . . 6
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))) / ((abs‘((i
· -𝐴) +
(√‘(1 − (-𝐴↑2)))))↑2)) = ((1 /
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))))) |
55 | 36, 51, 54 | 3eqtr3d 2788 |
. . . . 5
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
((i · 𝐴) +
(√‘(1 − (𝐴↑2)))) = ((1 / ((abs‘((i ·
-𝐴) + (√‘(1
− (-𝐴↑2)))))↑2)) ·
(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))))) |
56 | 55 | fveq2d 6775 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℜ‘((i · 𝐴) + (√‘(1 − (𝐴↑2))))) = (ℜ‘((1
/ ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))))) |
57 | 20, 21 | remul2d 14936 |
. . . 4
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℜ‘((1 / ((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2))))))) = ((1 /
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))))) |
58 | 56, 57 | eqtrd 2780 |
. . 3
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) →
(ℜ‘((i · 𝐴) + (√‘(1 − (𝐴↑2))))) = ((1 /
((abs‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))↑2)) ·
(ℜ‘(∗‘((i · -𝐴) + (√‘(1 − (-𝐴↑2)))))))) |
59 | 34, 58 | breqtrrd 5107 |
. 2
⊢ ((𝐴 ∈ ℂ ∧ 0 ≤
(ℑ‘𝐴)) → 0
≤ (ℜ‘((i · 𝐴) + (√‘(1 − (𝐴↑2)))))) |
60 | | asinlem3a 26018 |
. 2
⊢ ((𝐴 ∈ ℂ ∧
(ℑ‘𝐴) ≤ 0)
→ 0 ≤ (ℜ‘((i · 𝐴) + (√‘(1 − (𝐴↑2)))))) |
61 | 1, 2, 59, 60 | lecasei 11081 |
1
⊢ (𝐴 ∈ ℂ → 0 ≤
(ℜ‘((i · 𝐴) + (√‘(1 − (𝐴↑2)))))) |