dvmptdiv - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > dvmptdiv		Structured version Visualization version GIF version

Theorem dvmptdiv 25138

Description: Function-builder for derivative, quotient rule. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Hypotheses**
Ref	Expression
dvmptdiv.s	⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
dvmptdiv.a	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
dvmptdiv.b	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ 𝑉)
dvmptdiv.da	⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵))
dvmptdiv.c	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ∈ (ℂ ∖ {0}))
dvmptdiv.d	⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐷 ∈ ℂ)
dvmptdiv.dc	⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐶)) = (𝑥 ∈ 𝑋 ↦ 𝐷))

**Assertion**
Ref	Expression
dvmptdiv	⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (𝐴 / 𝐶))) = (𝑥 ∈ 𝑋 ↦ (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2))))

Distinct variable groups: 𝑥,𝑆 𝑥,𝑉 𝑥,𝑋 𝜑,𝑥 Allowed substitution hints: 𝐴(𝑥) 𝐵(𝑥) 𝐶(𝑥) 𝐷(𝑥)

**Proof of Theorem dvmptdiv**
Step	Hyp	Ref	Expression
1		dvmptdiv.a	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐴 ∈ ℂ)
2		dvmptdiv.c	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ∈ (ℂ ∖ {0}))
3	2	eldifad 3899	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ∈ ℂ)
4		eldifsn 4720	. . . . . . 7 ⊢ (𝐶 ∈ (ℂ ∖ {0}) ↔ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0))
5	2, 4	sylib 217	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0))
6	5	simprd 496	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ≠ 0)
7	1, 3, 6	divrecd 11754	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐴 / 𝐶) = (𝐴 · (1 / 𝐶)))
8	7	mpteq2dva 5174	. . 3 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ (𝐴 / 𝐶)) = (𝑥 ∈ 𝑋 ↦ (𝐴 · (1 / 𝐶))))
9	8	oveq2d 7291	. 2 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (𝐴 / 𝐶))) = (𝑆 D (𝑥 ∈ 𝑋 ↦ (𝐴 · (1 / 𝐶)))))
10		dvmptdiv.s	. . 3 ⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
11		dvmptdiv.b	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ 𝑉)
12		dvmptdiv.da	. . 3 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐴)) = (𝑥 ∈ 𝑋 ↦ 𝐵))
13	3, 6	reccld 11744	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 / 𝐶) ∈ ℂ)
14		1cnd 10970	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 1 ∈ ℂ)
15		dvmptdiv.d	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐷 ∈ ℂ)
16	14, 15	mulcld 10995	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) ∈ ℂ)
17	3	sqcld 13862	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ∈ ℂ)
18	6	neneqd 2948	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ¬ 𝐶 = 0)
19		sqeq0 13840	. . . . . . . 8 ⊢ (𝐶 ∈ ℂ → ((𝐶↑2) = 0 ↔ 𝐶 = 0))
20	3, 19	syl 17	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐶↑2) = 0 ↔ 𝐶 = 0))
21	18, 20	mtbird 325	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ¬ (𝐶↑2) = 0)
22	21	neqned 2950	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ≠ 0)
23	16, 17, 22	divcld 11751	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
24	23	negcld 11319	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
25		1cnd 10970	. . . 4 ⊢ (𝜑 → 1 ∈ ℂ)
26		dvmptdiv.dc	. . . 4 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐶)) = (𝑥 ∈ 𝑋 ↦ 𝐷))
27	10, 25, 2, 15, 26	dvrecg 25137	. . 3 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (1 / 𝐶))) = (𝑥 ∈ 𝑋 ↦ -((1 · 𝐷) / (𝐶↑2))))
28	10, 1, 11, 12, 13, 24, 27	dvmptmul 25125	. 2 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (𝐴 · (1 / 𝐶)))) = (𝑥 ∈ 𝑋 ↦ ((𝐵 · (1 / 𝐶)) + (-((1 · 𝐷) / (𝐶↑2)) · 𝐴))))
29	10, 1, 11, 12	dvmptcl 25123	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ)
30	29, 3	mulcld 10995	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · 𝐶) ∈ ℂ)
31	30, 17, 22	divcld 11751	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) ∈ ℂ)
32	15, 1	mulcld 10995	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 · 𝐴) ∈ ℂ)
33	32, 17, 22	divcld 11751	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) ∈ ℂ)
34	31, 33	negsubd 11338	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (((𝐵 · 𝐶) / (𝐶↑2)) + -((𝐷 · 𝐴) / (𝐶↑2))) = (((𝐵 · 𝐶) / (𝐶↑2)) − ((𝐷 · 𝐴) / (𝐶↑2))))
35	29, 14, 3, 6	div12d 11787	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = (1 · (𝐵 / 𝐶)))
36	29, 3, 6	divcld 11751	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) ∈ ℂ)
37	36	mulid2d 10993	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · (𝐵 / 𝐶)) = (𝐵 / 𝐶))
38	3	sqvald 13861	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) = (𝐶 · 𝐶))
39	38	oveq2d 7291	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) = ((𝐵 · 𝐶) / (𝐶 · 𝐶)))
40	29, 3, 3, 6, 6	divcan5rd 11778	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶 · 𝐶)) = (𝐵 / 𝐶))
41	39, 40	eqtr2d 2779	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) = ((𝐵 · 𝐶) / (𝐶↑2)))
42	35, 37, 41	3eqtrd 2782	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = ((𝐵 · 𝐶) / (𝐶↑2)))
43	15	mulid2d 10993	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) = 𝐷)
44	43	oveq1d 7290	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) = (𝐷 / (𝐶↑2)))
45	44	negeqd 11215	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) = -(𝐷 / (𝐶↑2)))
46	45	oveq1d 7290	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = (-(𝐷 / (𝐶↑2)) · 𝐴))
47	15, 17, 22	divcld 11751	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 / (𝐶↑2)) ∈ ℂ)
48	47, 1	mulneg1d 11428	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-(𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 / (𝐶↑2)) · 𝐴))
49	15, 1, 17, 22	div23d 11788	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) = ((𝐷 / (𝐶↑2)) · 𝐴))
50	49	eqcomd 2744	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 / (𝐶↑2)) · 𝐴) = ((𝐷 · 𝐴) / (𝐶↑2)))
51	50	negeqd 11215	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
52	46, 48, 51	3eqtrd 2782	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
53	42, 52	oveq12d 7293	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · (1 / 𝐶)) + (-((1 · 𝐷) / (𝐶↑2)) · 𝐴)) = (((𝐵 · 𝐶) / (𝐶↑2)) + -((𝐷 · 𝐴) / (𝐶↑2))))
54	30, 32, 17, 22	divsubdird 11790	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2)) = (((𝐵 · 𝐶) / (𝐶↑2)) − ((𝐷 · 𝐴) / (𝐶↑2))))
55	34, 53, 54	3eqtr4d 2788	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · (1 / 𝐶)) + (-((1 · 𝐷) / (𝐶↑2)) · 𝐴)) = (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2)))
56	55	mpteq2dva 5174	. 2 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ ((𝐵 · (1 / 𝐶)) + (-((1 · 𝐷) / (𝐶↑2)) · 𝐴))) = (𝑥 ∈ 𝑋 ↦ (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2))))
57	9, 28, 56	3eqtrd 2782	1 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (𝐴 / 𝐶))) = (𝑥 ∈ 𝑋 ↦ (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∖ cdif 3884 {csn 4561 {cpr 4563 ↦ cmpt 5157 (class class class)co 7275 ℂcc 10869 ℝcr 10870 0cc0 10871 1c1 10872 + caddc 10874 · cmul 10876 − cmin 11205 -cneg 11206 / cdiv 11632 2c2 12028 ↑cexp 13782 D cdv 25027

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-pre-sup 10949 ax-addf 10950 ax-mulf 10951

This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-iin 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 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-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-om 7713 df-1st 7831 df-2nd 7832 df-supp 7978 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-map 8617 df-pm 8618 df-ixp 8686 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fsupp 9129 df-fi 9170 df-sup 9201 df-inf 9202 df-oi 9269 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-q 12689 df-rp 12731 df-xneg 12848 df-xadd 12849 df-xmul 12850 df-icc 13086 df-fz 13240 df-fzo 13383 df-seq 13722 df-exp 13783 df-hash 14045 df-cj 14810 df-re 14811 df-im 14812 df-sqrt 14946 df-abs 14947 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-starv 16977 df-sca 16978 df-vsca 16979 df-ip 16980 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-hom 16986 df-cco 16987 df-rest 17133 df-topn 17134 df-0g 17152 df-gsum 17153 df-topgen 17154 df-pt 17155 df-prds 17158 df-xrs 17213 df-qtop 17218 df-imas 17219 df-xps 17221 df-mre 17295 df-mrc 17296 df-acs 17298 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-submnd 18431 df-mulg 18701 df-cntz 18923 df-cmn 19388 df-psmet 20589 df-xmet 20590 df-met 20591 df-bl 20592 df-mopn 20593 df-fbas 20594 df-fg 20595 df-cnfld 20598 df-top 22043 df-topon 22060 df-topsp 22082 df-bases 22096 df-cld 22170 df-ntr 22171 df-cls 22172 df-nei 22249 df-lp 22287 df-perf 22288 df-cn 22378 df-cnp 22379 df-t1 22465 df-haus 22466 df-tx 22713 df-hmeo 22906 df-fil 22997 df-fm 23089 df-flim 23090 df-flf 23091 df-xms 23473 df-ms 23474 df-tms 23475 df-cncf 24041 df-limc 25030 df-dv 25031

This theorem is referenced by: dvdivf 43463 dvdivbd 43464 fourierdlem56 43703 fourierdlem57 43704

W3C validator