Metamath Proof Explorer


Theorem xadddilem

Description: Lemma for xadddi . (Contributed by Mario Carneiro, 20-Aug-2015)

Ref Expression
Assertion xadddilem ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C

Proof

Step Hyp Ref Expression
1 simpl1 ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ∈ ℝ
2 recn ⊢ A ∈ ℝ → A ∈ ℂ
3 recn ⊢ B ∈ ℝ → B ∈ ℂ
4 recn ⊢ C ∈ ℝ → C ∈ ℂ
5 adddi ⊢ A ∈ ℂ ∧ B ∈ ℂ ∧ C ∈ ℂ → A ⁢ B + C = A ⁢ B + A ⁢ C
6 2 3 4 5 syl3an ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ B + C = A ⁢ B + A ⁢ C
7 6 3expa ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ B + C = A ⁢ B + A ⁢ C
8 readdcl ⊢ B ∈ ℝ ∧ C ∈ ℝ → B + C ∈ ℝ
9 rexmul ⊢ A ∈ ℝ ∧ B + C ∈ ℝ → A ⋅ 𝑒 B + C = A ⁢ B + C
10 8 9 sylan2 ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + C = A ⁢ B + C
11 10 anassrs ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + C = A ⁢ B + C
12 remulcl ⊢ A ∈ ℝ ∧ B ∈ ℝ → A ⁢ B ∈ ℝ
13 12 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ B ∈ ℝ
14 remulcl ⊢ A ∈ ℝ ∧ C ∈ ℝ → A ⁢ C ∈ ℝ
15 14 adantlr ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ C ∈ ℝ
16 13 15 rexaddd ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ B + 𝑒 A ⁢ C = A ⁢ B + A ⁢ C
17 7 11 16 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + C = A ⁢ B + 𝑒 A ⁢ C
18 rexadd ⊢ B ∈ ℝ ∧ C ∈ ℝ → B + 𝑒 C = B + C
19 18 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → B + 𝑒 C = B + C
20 19 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + C
21 rexmul ⊢ A ∈ ℝ ∧ B ∈ ℝ → A ⋅ 𝑒 B = A ⁢ B
22 21 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B = A ⁢ B
23 rexmul ⊢ A ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C = A ⁢ C
24 23 adantlr ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C = A ⁢ C
25 22 24 oveq12d ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⁢ B + 𝑒 A ⁢ C
26 17 20 25 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
27 1 26 sylanl1 ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
28 rexr ⊢ A ∈ ℝ → A ∈ ℝ *
29 28 3ad2ant1 ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * → A ∈ ℝ *
30 xmulpnf1 ⊢ A ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ = +∞
31 29 30 sylan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ = +∞
32 31 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 +∞ = +∞
33 21 12 eqeltrd ⊢ A ∈ ℝ ∧ B ∈ ℝ → A ⋅ 𝑒 B ∈ ℝ
34 1 33 sylan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 B ∈ ℝ
35 rexr ⊢ A ⋅ 𝑒 B ∈ ℝ → A ⋅ 𝑒 B ∈ ℝ *
36 renemnf ⊢ A ⋅ 𝑒 B ∈ ℝ → A ⋅ 𝑒 B ≠ −∞
37 xaddpnf1 ⊢ A ⋅ 𝑒 B ∈ ℝ * ∧ A ⋅ 𝑒 B ≠ −∞ → A ⋅ 𝑒 B + 𝑒 +∞ = +∞
38 35 36 37 syl2anc ⊢ A ⋅ 𝑒 B ∈ ℝ → A ⋅ 𝑒 B + 𝑒 +∞ = +∞
39 34 38 syl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 B + 𝑒 +∞ = +∞
40 32 39 eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 +∞ = A ⋅ 𝑒 B + 𝑒 +∞
41 40 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → A ⋅ 𝑒 +∞ = A ⋅ 𝑒 B + 𝑒 +∞
42 oveq2 ⊢ C = +∞ → B + 𝑒 C = B + 𝑒 +∞
43 rexr ⊢ B ∈ ℝ → B ∈ ℝ *
44 renemnf ⊢ B ∈ ℝ → B ≠ −∞
45 xaddpnf1 ⊢ B ∈ ℝ * ∧ B ≠ −∞ → B + 𝑒 +∞ = +∞
46 43 44 45 syl2anc ⊢ B ∈ ℝ → B + 𝑒 +∞ = +∞
47 46 adantl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → B + 𝑒 +∞ = +∞
48 42 47 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → B + 𝑒 C = +∞
49 48 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 +∞
50 oveq2 ⊢ C = +∞ → A ⋅ 𝑒 C = A ⋅ 𝑒 +∞
51 50 32 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → A ⋅ 𝑒 C = +∞
52 51 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 B + 𝑒 +∞
53 41 49 52 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
54 xmulmnf1 ⊢ A ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ = −∞
55 29 54 sylan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ = −∞
56 55 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 −∞ = −∞
57 56 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 −∞ = −∞
58 34 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 B ∈ ℝ
59 renepnf ⊢ A ⋅ 𝑒 B ∈ ℝ → A ⋅ 𝑒 B ≠ +∞
60 xaddmnf1 ⊢ A ⋅ 𝑒 B ∈ ℝ * ∧ A ⋅ 𝑒 B ≠ +∞ → A ⋅ 𝑒 B + 𝑒 −∞ = −∞
61 35 59 60 syl2anc ⊢ A ⋅ 𝑒 B ∈ ℝ → A ⋅ 𝑒 B + 𝑒 −∞ = −∞
62 58 61 syl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 −∞ = −∞
63 57 62 eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 −∞ = A ⋅ 𝑒 B + 𝑒 −∞
64 oveq2 ⊢ C = −∞ → B + 𝑒 C = B + 𝑒 −∞
65 renepnf ⊢ B ∈ ℝ → B ≠ +∞
66 xaddmnf1 ⊢ B ∈ ℝ * ∧ B ≠ +∞ → B + 𝑒 −∞ = −∞
67 43 65 66 syl2anc ⊢ B ∈ ℝ → B + 𝑒 −∞ = −∞
68 67 adantl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → B + 𝑒 −∞ = −∞
69 64 68 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → B + 𝑒 C = −∞
70 69 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 −∞
71 oveq2 ⊢ C = −∞ → A ⋅ 𝑒 C = A ⋅ 𝑒 −∞
72 71 56 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 C = −∞
73 72 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 B + 𝑒 −∞
74 63 70 73 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
75 simpl3 ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → C ∈ ℝ *
76 elxr ⊢ C ∈ ℝ * ↔ C ∈ ℝ ∨ C = +∞ ∨ C = −∞
77 75 76 sylib ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → C ∈ ℝ ∨ C = +∞ ∨ C = −∞
78 77 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → C ∈ ℝ ∨ C = +∞ ∨ C = −∞
79 27 53 74 78 mpjao3dan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
80 31 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 +∞ = +∞
81 1 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → A ∈ ℝ
82 23 14 eqeltrd ⊢ A ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C ∈ ℝ
83 81 82 sylan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 C ∈ ℝ
84 rexr ⊢ A ⋅ 𝑒 C ∈ ℝ → A ⋅ 𝑒 C ∈ ℝ *
85 renemnf ⊢ A ⋅ 𝑒 C ∈ ℝ → A ⋅ 𝑒 C ≠ −∞
86 xaddpnf2 ⊢ A ⋅ 𝑒 C ∈ ℝ * ∧ A ⋅ 𝑒 C ≠ −∞ → +∞ + 𝑒 A ⋅ 𝑒 C = +∞
87 84 85 86 syl2anc ⊢ A ⋅ 𝑒 C ∈ ℝ → +∞ + 𝑒 A ⋅ 𝑒 C = +∞
88 83 87 syl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → +∞ + 𝑒 A ⋅ 𝑒 C = +∞
89 80 88 eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 +∞ = +∞ + 𝑒 A ⋅ 𝑒 C
90 simpr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → B = +∞
91 90 oveq1d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → B + 𝑒 C = +∞ + 𝑒 C
92 rexr ⊢ C ∈ ℝ → C ∈ ℝ *
93 renemnf ⊢ C ∈ ℝ → C ≠ −∞
94 xaddpnf2 ⊢ C ∈ ℝ * ∧ C ≠ −∞ → +∞ + 𝑒 C = +∞
95 92 93 94 syl2anc ⊢ C ∈ ℝ → +∞ + 𝑒 C = +∞
96 91 95 sylan9eq ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → B + 𝑒 C = +∞
97 96 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 +∞
98 oveq2 ⊢ B = +∞ → A ⋅ 𝑒 B = A ⋅ 𝑒 +∞
99 98 31 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → A ⋅ 𝑒 B = +∞
100 99 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B = +∞
101 100 oveq1d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = +∞ + 𝑒 A ⋅ 𝑒 C
102 89 97 101 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
103 pnfxr ⊢ +∞ ∈ ℝ *
104 pnfnemnf ⊢ +∞ ≠ −∞
105 xaddpnf1 ⊢ +∞ ∈ ℝ * ∧ +∞ ≠ −∞ → +∞ + 𝑒 +∞ = +∞
106 103 104 105 mp2an ⊢ +∞ + 𝑒 +∞ = +∞
107 31 31 oveq12d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 +∞ = +∞ + 𝑒 +∞
108 106 107 31 3eqtr4a ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 +∞ = A ⋅ 𝑒 +∞
109 108 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 +∞ = A ⋅ 𝑒 +∞
110 98 50 oveqan12d ⊢ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 +∞
111 110 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 +∞
112 oveq12 ⊢ B = +∞ ∧ C = +∞ → B + 𝑒 C = +∞ + 𝑒 +∞
113 112 106 eqtrdi ⊢ B = +∞ ∧ C = +∞ → B + 𝑒 C = +∞
114 113 oveq2d ⊢ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 +∞
115 114 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 +∞
116 109 111 115 3eqtr4rd ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
117 pnfaddmnf ⊢ +∞ + 𝑒 −∞ = 0
118 31 55 oveq12d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 −∞ = +∞ + 𝑒 −∞
119 xmul01 ⊢ A ∈ ℝ * → A ⋅ 𝑒 0 = 0
120 1 28 119 3syl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 0 = 0
121 117 118 120 3eqtr4a ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 −∞ = A ⋅ 𝑒 0
122 121 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 −∞ = A ⋅ 𝑒 0
123 98 71 oveqan12d ⊢ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 −∞
124 123 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 +∞ + 𝑒 A ⋅ 𝑒 −∞
125 oveq12 ⊢ B = +∞ ∧ C = −∞ → B + 𝑒 C = +∞ + 𝑒 −∞
126 125 117 eqtrdi ⊢ B = +∞ ∧ C = −∞ → B + 𝑒 C = 0
127 126 oveq2d ⊢ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 0
128 127 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 0
129 122 124 128 3eqtr4rd ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
130 77 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → C ∈ ℝ ∨ C = +∞ ∨ C = −∞
131 102 116 129 130 mpjao3dan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
132 55 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 −∞ = −∞
133 1 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → A ∈ ℝ
134 133 82 sylan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 C ∈ ℝ
135 renepnf ⊢ A ⋅ 𝑒 C ∈ ℝ → A ⋅ 𝑒 C ≠ +∞
136 xaddmnf2 ⊢ A ⋅ 𝑒 C ∈ ℝ * ∧ A ⋅ 𝑒 C ≠ +∞ → −∞ + 𝑒 A ⋅ 𝑒 C = −∞
137 84 135 136 syl2anc ⊢ A ⋅ 𝑒 C ∈ ℝ → −∞ + 𝑒 A ⋅ 𝑒 C = −∞
138 134 137 syl ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → −∞ + 𝑒 A ⋅ 𝑒 C = −∞
139 132 138 eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 −∞ = −∞ + 𝑒 A ⋅ 𝑒 C
140 simpr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → B = −∞
141 140 oveq1d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → B + 𝑒 C = −∞ + 𝑒 C
142 renepnf ⊢ C ∈ ℝ → C ≠ +∞
143 xaddmnf2 ⊢ C ∈ ℝ * ∧ C ≠ +∞ → −∞ + 𝑒 C = −∞
144 92 142 143 syl2anc ⊢ C ∈ ℝ → −∞ + 𝑒 C = −∞
145 141 144 sylan9eq ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → B + 𝑒 C = −∞
146 145 oveq2d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 −∞
147 oveq2 ⊢ B = −∞ → A ⋅ 𝑒 B = A ⋅ 𝑒 −∞
148 147 55 sylan9eqr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → A ⋅ 𝑒 B = −∞
149 148 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B = −∞
150 149 oveq1d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = −∞ + 𝑒 A ⋅ 𝑒 C
151 139 146 150 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C ∈ ℝ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
152 55 31 oveq12d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞ = −∞ + 𝑒 +∞
153 mnfaddpnf ⊢ −∞ + 𝑒 +∞ = 0
154 152 153 eqtrdi ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞ = 0
155 120 154 eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 0 = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞
156 155 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 0 = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞
157 oveq12 ⊢ B = −∞ ∧ C = +∞ → B + 𝑒 C = −∞ + 𝑒 +∞
158 157 153 eqtrdi ⊢ B = −∞ ∧ C = +∞ → B + 𝑒 C = 0
159 158 oveq2d ⊢ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 0
160 159 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 0
161 147 50 oveqan12d ⊢ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞
162 161 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 +∞
163 156 160 162 3eqtr4d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = +∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
164 mnfxr ⊢ −∞ ∈ ℝ *
165 mnfnepnf ⊢ −∞ ≠ +∞
166 xaddmnf1 ⊢ −∞ ∈ ℝ * ∧ −∞ ≠ +∞ → −∞ + 𝑒 −∞ = −∞
167 164 165 166 mp2an ⊢ −∞ + 𝑒 −∞ = −∞
168 55 55 oveq12d ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 −∞ = −∞ + 𝑒 −∞
169 167 168 55 3eqtr4a ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 −∞ = A ⋅ 𝑒 −∞
170 169 ad2antrr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 −∞ = A ⋅ 𝑒 −∞
171 147 71 oveqan12d ⊢ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 −∞
172 171 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C = A ⋅ 𝑒 −∞ + 𝑒 A ⋅ 𝑒 −∞
173 oveq12 ⊢ B = −∞ ∧ C = −∞ → B + 𝑒 C = −∞ + 𝑒 −∞
174 173 167 eqtrdi ⊢ B = −∞ ∧ C = −∞ → B + 𝑒 C = −∞
175 174 oveq2d ⊢ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 −∞
176 175 adantll ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 −∞
177 170 172 176 3eqtr4rd ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ ∧ C = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
178 77 adantr ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → C ∈ ℝ ∨ C = +∞ ∨ C = −∞
179 151 163 177 178 mpjao3dan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A ∧ B = −∞ → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C
180 simpl2 ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → B ∈ ℝ *
181 elxr ⊢ B ∈ ℝ * ↔ B ∈ ℝ ∨ B = +∞ ∨ B = −∞
182 180 181 sylib ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → B ∈ ℝ ∨ B = +∞ ∨ B = −∞
183 79 131 179 182 mpjao3dan ⊢ A ∈ ℝ ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 B + 𝑒 C = A ⋅ 𝑒 B + 𝑒 A ⋅ 𝑒 C