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Mirrors > Home > MPE Home > Th. List > divsubdir | Structured version Visualization version GIF version |
Description: Distribution of division over subtraction. (Contributed by NM, 4-Mar-2005.) |
Ref | Expression |
---|---|
divsubdir | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 − 𝐵) / 𝐶) = ((𝐴 / 𝐶) − (𝐵 / 𝐶))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | negcl 11219 | . . . 4 ⊢ (𝐵 ∈ ℂ → -𝐵 ∈ ℂ) | |
2 | divdir 11656 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ -𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 + -𝐵) / 𝐶) = ((𝐴 / 𝐶) + (-𝐵 / 𝐶))) | |
3 | 1, 2 | syl3an2 1163 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 + -𝐵) / 𝐶) = ((𝐴 / 𝐶) + (-𝐵 / 𝐶))) |
4 | negsub 11267 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) | |
5 | 4 | oveq1d 7284 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 + -𝐵) / 𝐶) = ((𝐴 − 𝐵) / 𝐶)) |
6 | 5 | 3adant3 1131 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 + -𝐵) / 𝐶) = ((𝐴 − 𝐵) / 𝐶)) |
7 | 3, 6 | eqtr3d 2782 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 / 𝐶) + (-𝐵 / 𝐶)) = ((𝐴 − 𝐵) / 𝐶)) |
8 | divneg 11665 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ ∧ 𝐶 ≠ 0) → -(𝐵 / 𝐶) = (-𝐵 / 𝐶)) | |
9 | 8 | 3expb 1119 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → -(𝐵 / 𝐶) = (-𝐵 / 𝐶)) |
10 | 9 | 3adant1 1129 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → -(𝐵 / 𝐶) = (-𝐵 / 𝐶)) |
11 | 10 | oveq2d 7285 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 / 𝐶) + -(𝐵 / 𝐶)) = ((𝐴 / 𝐶) + (-𝐵 / 𝐶))) |
12 | divcl 11637 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℂ ∧ 𝐶 ≠ 0) → (𝐴 / 𝐶) ∈ ℂ) | |
13 | 12 | 3expb 1119 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → (𝐴 / 𝐶) ∈ ℂ) |
14 | 13 | 3adant2 1130 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → (𝐴 / 𝐶) ∈ ℂ) |
15 | divcl 11637 | . . . . . 6 ⊢ ((𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ ∧ 𝐶 ≠ 0) → (𝐵 / 𝐶) ∈ ℂ) | |
16 | 15 | 3expb 1119 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → (𝐵 / 𝐶) ∈ ℂ) |
17 | 16 | 3adant1 1129 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → (𝐵 / 𝐶) ∈ ℂ) |
18 | 14, 17 | negsubd 11336 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 / 𝐶) + -(𝐵 / 𝐶)) = ((𝐴 / 𝐶) − (𝐵 / 𝐶))) |
19 | 11, 18 | eqtr3d 2782 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 / 𝐶) + (-𝐵 / 𝐶)) = ((𝐴 / 𝐶) − (𝐵 / 𝐶))) |
20 | 7, 19 | eqtr3d 2782 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0)) → ((𝐴 − 𝐵) / 𝐶) = ((𝐴 / 𝐶) − (𝐵 / 𝐶))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1542 ∈ wcel 2110 ≠ wne 2945 (class class class)co 7269 ℂcc 10868 0cc0 10870 + caddc 10873 − cmin 11203 -cneg 11204 / cdiv 11630 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7580 ax-resscn 10927 ax-1cn 10928 ax-icn 10929 ax-addcl 10930 ax-addrcl 10931 ax-mulcl 10932 ax-mulrcl 10933 ax-mulcom 10934 ax-addass 10935 ax-mulass 10936 ax-distr 10937 ax-i2m1 10938 ax-1ne0 10939 ax-1rid 10940 ax-rnegex 10941 ax-rrecex 10942 ax-cnre 10943 ax-pre-lttri 10944 ax-pre-lttrn 10945 ax-pre-ltadd 10946 ax-pre-mulgt0 10947 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-reu 3073 df-rmo 3074 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-br 5080 df-opab 5142 df-mpt 5163 df-id 5489 df-po 5503 df-so 5504 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6389 df-fun 6433 df-fn 6434 df-f 6435 df-f1 6436 df-fo 6437 df-f1o 6438 df-fv 6439 df-riota 7226 df-ov 7272 df-oprab 7273 df-mpo 7274 df-er 8479 df-en 8715 df-dom 8716 df-sdom 8717 df-pnf 11010 df-mnf 11011 df-xr 11012 df-ltxr 11013 df-le 11014 df-sub 11205 df-neg 11206 df-div 11631 |
This theorem is referenced by: subdivcomb1 11668 subdivcomb2 11669 divsubdird 11788 1mhlfehlf 12190 halfpm6th 12192 halfaddsub 12204 zeo 12404 quoremz 13571 quoremnn0ALT 13573 mulsubdivbinom2 13972 facndiv 13998 bpoly3 15764 cos2bnd 15893 rpnnen2lem3 15921 rpnnen2lem11 15929 pythagtriplem15 16526 ovolscalem1 24673 sinq12gt0 25660 sincos6thpi 25668 ang180lem2 25956 log2cnv 26090 log2tlbnd 26091 basellem3 26228 ppiub 26348 logfacrlim 26368 logexprlim 26369 bposlem8 26435 gausslemma2dlem1a 26509 chtppilimlem1 26617 vmadivsum 26626 rplogsumlem2 26629 rpvmasumlem 26631 rplogsum 26671 mulog2sumlem1 26678 selberg2lem 26694 selberg2 26695 selbergr 26712 pntlemr 26746 pntlemj 26747 ballotth 32498 nndivsub 34640 heiborlem6 35968 areaquad 41042 lhe4.4ex1a 41915 stirlinglem10 43593 divsub1dir 45825 line2 46065 |
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