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Mirrors > Home > ILE Home > Th. List > absdivap | GIF version |
Description: Absolute value distributes over division. (Contributed by Jim Kingdon, 11-Aug-2021.) |
Ref | Expression |
---|---|
absdivap | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘(𝐴 / 𝐵)) = ((abs‘𝐴) / (abs‘𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | divclap 8665 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (𝐴 / 𝐵) ∈ ℂ) | |
2 | abscl 11092 | . . . . 5 ⊢ ((𝐴 / 𝐵) ∈ ℂ → (abs‘(𝐴 / 𝐵)) ∈ ℝ) | |
3 | 1, 2 | syl 14 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘(𝐴 / 𝐵)) ∈ ℝ) |
4 | 3 | recnd 8016 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘(𝐴 / 𝐵)) ∈ ℂ) |
5 | absrpclap 11102 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘𝐵) ∈ ℝ+) | |
6 | 5 | 3adant1 1017 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘𝐵) ∈ ℝ+) |
7 | 6 | rpcnd 9728 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘𝐵) ∈ ℂ) |
8 | 6 | rpap0d 9732 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘𝐵) # 0) |
9 | 4, 7, 8 | divcanap4d 8783 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (((abs‘(𝐴 / 𝐵)) · (abs‘𝐵)) / (abs‘𝐵)) = (abs‘(𝐴 / 𝐵))) |
10 | simp2 1000 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → 𝐵 ∈ ℂ) | |
11 | absmul 11110 | . . . . 5 ⊢ (((𝐴 / 𝐵) ∈ ℂ ∧ 𝐵 ∈ ℂ) → (abs‘((𝐴 / 𝐵) · 𝐵)) = ((abs‘(𝐴 / 𝐵)) · (abs‘𝐵))) | |
12 | 1, 10, 11 | syl2anc 411 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘((𝐴 / 𝐵) · 𝐵)) = ((abs‘(𝐴 / 𝐵)) · (abs‘𝐵))) |
13 | divcanap1 8668 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → ((𝐴 / 𝐵) · 𝐵) = 𝐴) | |
14 | 13 | fveq2d 5538 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘((𝐴 / 𝐵) · 𝐵)) = (abs‘𝐴)) |
15 | 12, 14 | eqtr3d 2224 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → ((abs‘(𝐴 / 𝐵)) · (abs‘𝐵)) = (abs‘𝐴)) |
16 | 15 | oveq1d 5911 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (((abs‘(𝐴 / 𝐵)) · (abs‘𝐵)) / (abs‘𝐵)) = ((abs‘𝐴) / (abs‘𝐵))) |
17 | 9, 16 | eqtr3d 2224 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐵 # 0) → (abs‘(𝐴 / 𝐵)) = ((abs‘𝐴) / (abs‘𝐵))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ w3a 980 = wceq 1364 ∈ wcel 2160 class class class wbr 4018 ‘cfv 5235 (class class class)co 5896 ℂcc 7839 ℝcr 7840 0cc0 7841 · cmul 7846 # cap 8568 / cdiv 8659 ℝ+crp 9683 abscabs 11038 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-coll 4133 ax-sep 4136 ax-nul 4144 ax-pow 4192 ax-pr 4227 ax-un 4451 ax-setind 4554 ax-iinf 4605 ax-cnex 7932 ax-resscn 7933 ax-1cn 7934 ax-1re 7935 ax-icn 7936 ax-addcl 7937 ax-addrcl 7938 ax-mulcl 7939 ax-mulrcl 7940 ax-addcom 7941 ax-mulcom 7942 ax-addass 7943 ax-mulass 7944 ax-distr 7945 ax-i2m1 7946 ax-0lt1 7947 ax-1rid 7948 ax-0id 7949 ax-rnegex 7950 ax-precex 7951 ax-cnre 7952 ax-pre-ltirr 7953 ax-pre-ltwlin 7954 ax-pre-lttrn 7955 ax-pre-apti 7956 ax-pre-ltadd 7957 ax-pre-mulgt0 7958 ax-pre-mulext 7959 ax-arch 7960 ax-caucvg 7961 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rmo 2476 df-rab 2477 df-v 2754 df-sbc 2978 df-csb 3073 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-nul 3438 df-if 3550 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-iun 3903 df-br 4019 df-opab 4080 df-mpt 4081 df-tr 4117 df-id 4311 df-po 4314 df-iso 4315 df-iord 4384 df-on 4386 df-ilim 4387 df-suc 4389 df-iom 4608 df-xp 4650 df-rel 4651 df-cnv 4652 df-co 4653 df-dm 4654 df-rn 4655 df-res 4656 df-ima 4657 df-iota 5196 df-fun 5237 df-fn 5238 df-f 5239 df-f1 5240 df-fo 5241 df-f1o 5242 df-fv 5243 df-riota 5852 df-ov 5899 df-oprab 5900 df-mpo 5901 df-1st 6165 df-2nd 6166 df-recs 6330 df-frec 6416 df-pnf 8024 df-mnf 8025 df-xr 8026 df-ltxr 8027 df-le 8028 df-sub 8160 df-neg 8161 df-reap 8562 df-ap 8569 df-div 8660 df-inn 8950 df-2 9008 df-3 9009 df-4 9010 df-n0 9207 df-z 9284 df-uz 9559 df-rp 9684 df-seqfrec 10477 df-exp 10551 df-cj 10883 df-re 10884 df-im 10885 df-rsqrt 11039 df-abs 11040 |
This theorem is referenced by: absexpzap 11121 absdivapzi 11195 absdivapd 11236 |
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