dvmptdiv - Metamath Proof Explorer

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Theorem dvmptdiv 25498

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 3960	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ∈ ℂ)
4		eldifsn 4790	. . . . . . 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 11995	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐴 / 𝐶) = (𝐴 · (1 / 𝐶)))
8	7	mpteq2dva 5248	. . 3 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ (𝐴 / 𝐶)) = (𝑥 ∈ 𝑋 ↦ (𝐴 · (1 / 𝐶))))
9	8	oveq2d 7427	. 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 11985	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 / 𝐶) ∈ ℂ)
14		1cnd 11211	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 1 ∈ ℂ)
15		dvmptdiv.d	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐷 ∈ ℂ)
16	14, 15	mulcld 11236	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) ∈ ℂ)
17	3	sqcld 14111	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ∈ ℂ)
18	6	neneqd 2945	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ¬ 𝐶 = 0)
19		sqeq0 14087	. . . . . . . 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 324	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ¬ (𝐶↑2) = 0)
22	21	neqned 2947	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ≠ 0)
23	16, 17, 22	divcld 11992	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
24	23	negcld 11560	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
25		1cnd 11211	. . . 4 ⊢ (𝜑 → 1 ∈ ℂ)
26		dvmptdiv.dc	. . . 4 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐶)) = (𝑥 ∈ 𝑋 ↦ 𝐷))
27	10, 25, 2, 15, 26	dvrecg 25497	. . 3 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (1 / 𝐶))) = (𝑥 ∈ 𝑋 ↦ -((1 · 𝐷) / (𝐶↑2))))
28	10, 1, 11, 12, 13, 24, 27	dvmptmul 25485	. 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 25483	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ)
30	29, 3	mulcld 11236	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · 𝐶) ∈ ℂ)
31	30, 17, 22	divcld 11992	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) ∈ ℂ)
32	15, 1	mulcld 11236	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 · 𝐴) ∈ ℂ)
33	32, 17, 22	divcld 11992	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) ∈ ℂ)
34	31, 33	negsubd 11579	. . . 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 12028	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = (1 · (𝐵 / 𝐶)))
36	29, 3, 6	divcld 11992	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) ∈ ℂ)
37	36	mullidd 11234	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · (𝐵 / 𝐶)) = (𝐵 / 𝐶))
38	3	sqvald 14110	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) = (𝐶 · 𝐶))
39	38	oveq2d 7427	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) = ((𝐵 · 𝐶) / (𝐶 · 𝐶)))
40	29, 3, 3, 6, 6	divcan5rd 12019	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶 · 𝐶)) = (𝐵 / 𝐶))
41	39, 40	eqtr2d 2773	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) = ((𝐵 · 𝐶) / (𝐶↑2)))
42	35, 37, 41	3eqtrd 2776	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = ((𝐵 · 𝐶) / (𝐶↑2)))
43	15	mullidd 11234	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) = 𝐷)
44	43	oveq1d 7426	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) = (𝐷 / (𝐶↑2)))
45	44	negeqd 11456	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) = -(𝐷 / (𝐶↑2)))
46	45	oveq1d 7426	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = (-(𝐷 / (𝐶↑2)) · 𝐴))
47	15, 17, 22	divcld 11992	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 / (𝐶↑2)) ∈ ℂ)
48	47, 1	mulneg1d 11669	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-(𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 / (𝐶↑2)) · 𝐴))
49	15, 1, 17, 22	div23d 12029	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) = ((𝐷 / (𝐶↑2)) · 𝐴))
50	49	eqcomd 2738	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 / (𝐶↑2)) · 𝐴) = ((𝐷 · 𝐴) / (𝐶↑2)))
51	50	negeqd 11456	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
52	46, 48, 51	3eqtrd 2776	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
53	42, 52	oveq12d 7429	. . . 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 12031	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2)) = (((𝐵 · 𝐶) / (𝐶↑2)) − ((𝐷 · 𝐴) / (𝐶↑2))))
55	34, 53, 54	3eqtr4d 2782	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · (1 / 𝐶)) + (-((1 · 𝐷) / (𝐶↑2)) · 𝐴)) = (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2)))
56	55	mpteq2dva 5248	. 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 2776	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 1541 ∈ wcel 2106 ≠ wne 2940 ∖ cdif 3945 {csn 4628 {cpr 4630 ↦ cmpt 5231 (class class class)co 7411 ℂcc 11110 ℝcr 11111 0cc0 11112 1c1 11113 + caddc 11115 · cmul 11117 − cmin 11446 -cneg 11447 / cdiv 11873 2c2 12269 ↑cexp 14029 D cdv 25387

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190 ax-addf 11191 ax-mulf 11192

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-iin 5000 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-of 7672 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-2o 8469 df-er 8705 df-map 8824 df-pm 8825 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-fi 9408 df-sup 9439 df-inf 9440 df-oi 9507 df-card 9936 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-div 11874 df-nn 12215 df-2 12277 df-3 12278 df-4 12279 df-5 12280 df-6 12281 df-7 12282 df-8 12283 df-9 12284 df-n0 12475 df-z 12561 df-dec 12680 df-uz 12825 df-q 12935 df-rp 12977 df-xneg 13094 df-xadd 13095 df-xmul 13096 df-icc 13333 df-fz 13487 df-fzo 13630 df-seq 13969 df-exp 14030 df-hash 14293 df-cj 15048 df-re 15049 df-im 15050 df-sqrt 15184 df-abs 15185 df-struct 17082 df-sets 17099 df-slot 17117 df-ndx 17129 df-base 17147 df-ress 17176 df-plusg 17212 df-mulr 17213 df-starv 17214 df-sca 17215 df-vsca 17216 df-ip 17217 df-tset 17218 df-ple 17219 df-ds 17221 df-unif 17222 df-hom 17223 df-cco 17224 df-rest 17370 df-topn 17371 df-0g 17389 df-gsum 17390 df-topgen 17391 df-pt 17392 df-prds 17395 df-xrs 17450 df-qtop 17455 df-imas 17456 df-xps 17458 df-mre 17532 df-mrc 17533 df-acs 17535 df-mgm 18563 df-sgrp 18612 df-mnd 18628 df-submnd 18674 df-mulg 18953 df-cntz 19183 df-cmn 19652 df-psmet 20942 df-xmet 20943 df-met 20944 df-bl 20945 df-mopn 20946 df-fbas 20947 df-fg 20948 df-cnfld 20951 df-top 22403 df-topon 22420 df-topsp 22442 df-bases 22456 df-cld 22530 df-ntr 22531 df-cls 22532 df-nei 22609 df-lp 22647 df-perf 22648 df-cn 22738 df-cnp 22739 df-t1 22825 df-haus 22826 df-tx 23073 df-hmeo 23266 df-fil 23357 df-fm 23449 df-flim 23450 df-flf 23451 df-xms 23833 df-ms 23834 df-tms 23835 df-cncf 24401 df-limc 25390 df-dv 25391

This theorem is referenced by: dvdivf 44717 dvdivbd 44718 fourierdlem56 44957 fourierdlem57 44958

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