dvmptdiv - Metamath Proof Explorer

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Theorem dvmptdiv 26027

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 3975	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ∈ ℂ)
4		eldifsn 4791	. . . . . . 7 ⊢ (𝐶 ∈ (ℂ ∖ {0}) ↔ (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0))
5	2, 4	sylib 218	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶 ∈ ℂ ∧ 𝐶 ≠ 0))
6	5	simprd 495	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐶 ≠ 0)
7	1, 3, 6	divrecd 12044	. . . 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 7447	. 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 12034	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 / 𝐶) ∈ ℂ)
14		1cnd 11254	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 1 ∈ ℂ)
15		dvmptdiv.d	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐷 ∈ ℂ)
16	14, 15	mulcld 11279	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) ∈ ℂ)
17	3	sqcld 14181	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ∈ ℂ)
18	6	neneqd 2943	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ¬ 𝐶 = 0)
19		sqeq0 14157	. . . . . . . 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 2945	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) ≠ 0)
23	16, 17, 22	divcld 12041	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
24	23	negcld 11605	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) ∈ ℂ)
25		1cnd 11254	. . . 4 ⊢ (𝜑 → 1 ∈ ℂ)
26		dvmptdiv.dc	. . . 4 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ 𝐶)) = (𝑥 ∈ 𝑋 ↦ 𝐷))
27	10, 25, 2, 15, 26	dvrecg 26026	. . 3 ⊢ (𝜑 → (𝑆 D (𝑥 ∈ 𝑋 ↦ (1 / 𝐶))) = (𝑥 ∈ 𝑋 ↦ -((1 · 𝐷) / (𝐶↑2))))
28	10, 1, 11, 12, 13, 24, 27	dvmptmul 26014	. 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 26012	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → 𝐵 ∈ ℂ)
30	29, 3	mulcld 11279	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · 𝐶) ∈ ℂ)
31	30, 17, 22	divcld 12041	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) ∈ ℂ)
32	15, 1	mulcld 11279	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 · 𝐴) ∈ ℂ)
33	32, 17, 22	divcld 12041	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) ∈ ℂ)
34	31, 33	negsubd 11624	. . . 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 12077	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = (1 · (𝐵 / 𝐶)))
36	29, 3, 6	divcld 12041	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) ∈ ℂ)
37	36	mullidd 11277	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · (𝐵 / 𝐶)) = (𝐵 / 𝐶))
38	3	sqvald 14180	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐶↑2) = (𝐶 · 𝐶))
39	38	oveq2d 7447	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶↑2)) = ((𝐵 · 𝐶) / (𝐶 · 𝐶)))
40	29, 3, 3, 6, 6	divcan5rd 12068	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐵 · 𝐶) / (𝐶 · 𝐶)) = (𝐵 / 𝐶))
41	39, 40	eqtr2d 2776	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 / 𝐶) = ((𝐵 · 𝐶) / (𝐶↑2)))
42	35, 37, 41	3eqtrd 2779	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐵 · (1 / 𝐶)) = ((𝐵 · 𝐶) / (𝐶↑2)))
43	15	mullidd 11277	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (1 · 𝐷) = 𝐷)
44	43	oveq1d 7446	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((1 · 𝐷) / (𝐶↑2)) = (𝐷 / (𝐶↑2)))
45	44	negeqd 11500	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((1 · 𝐷) / (𝐶↑2)) = -(𝐷 / (𝐶↑2)))
46	45	oveq1d 7446	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = (-(𝐷 / (𝐶↑2)) · 𝐴))
47	15, 17, 22	divcld 12041	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (𝐷 / (𝐶↑2)) ∈ ℂ)
48	47, 1	mulneg1d 11714	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-(𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 / (𝐶↑2)) · 𝐴))
49	15, 1, 17, 22	div23d 12078	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 · 𝐴) / (𝐶↑2)) = ((𝐷 / (𝐶↑2)) · 𝐴))
50	49	eqcomd 2741	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → ((𝐷 / (𝐶↑2)) · 𝐴) = ((𝐷 · 𝐴) / (𝐶↑2)))
51	50	negeqd 11500	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → -((𝐷 / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
52	46, 48, 51	3eqtrd 2779	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (-((1 · 𝐷) / (𝐶↑2)) · 𝐴) = -((𝐷 · 𝐴) / (𝐶↑2)))
53	42, 52	oveq12d 7449	. . . 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 12080	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑋) → (((𝐵 · 𝐶) − (𝐷 · 𝐴)) / (𝐶↑2)) = (((𝐵 · 𝐶) / (𝐶↑2)) − ((𝐷 · 𝐴) / (𝐶↑2))))
55	34, 53, 54	3eqtr4d 2785	. . 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 2779	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 206 ∧ wa 395 = wceq 1537 ∈ wcel 2106 ≠ wne 2938 ∖ cdif 3960 {csn 4631 {cpr 4633 ↦ cmpt 5231 (class class class)co 7431 ℂcc 11151 ℝcr 11152 0cc0 11153 1c1 11154 + caddc 11156 · cmul 11158 − cmin 11490 -cneg 11491 / cdiv 11918 2c2 12319 ↑cexp 14099 D cdv 25913

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-rep 5285 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-cnex 11209 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 ax-pre-sup 11231 ax-addf 11232

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-pss 3983 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-tp 4636 df-op 4638 df-uni 4913 df-int 4952 df-iun 4998 df-iin 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5583 df-eprel 5589 df-po 5597 df-so 5598 df-fr 5641 df-se 5642 df-we 5643 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-pred 6323 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-isom 6572 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-of 7697 df-om 7888 df-1st 8013 df-2nd 8014 df-supp 8185 df-frecs 8305 df-wrecs 8336 df-recs 8410 df-rdg 8449 df-1o 8505 df-2o 8506 df-er 8744 df-map 8867 df-pm 8868 df-ixp 8937 df-en 8985 df-dom 8986 df-sdom 8987 df-fin 8988 df-fsupp 9400 df-fi 9449 df-sup 9480 df-inf 9481 df-oi 9548 df-card 9977 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-div 11919 df-nn 12265 df-2 12327 df-3 12328 df-4 12329 df-5 12330 df-6 12331 df-7 12332 df-8 12333 df-9 12334 df-n0 12525 df-z 12612 df-dec 12732 df-uz 12877 df-q 12989 df-rp 13033 df-xneg 13152 df-xadd 13153 df-xmul 13154 df-icc 13391 df-fz 13545 df-fzo 13692 df-seq 14040 df-exp 14100 df-hash 14367 df-cj 15135 df-re 15136 df-im 15137 df-sqrt 15271 df-abs 15272 df-struct 17181 df-sets 17198 df-slot 17216 df-ndx 17228 df-base 17246 df-ress 17275 df-plusg 17311 df-mulr 17312 df-starv 17313 df-sca 17314 df-vsca 17315 df-ip 17316 df-tset 17317 df-ple 17318 df-ds 17320 df-unif 17321 df-hom 17322 df-cco 17323 df-rest 17469 df-topn 17470 df-0g 17488 df-gsum 17489 df-topgen 17490 df-pt 17491 df-prds 17494 df-xrs 17549 df-qtop 17554 df-imas 17555 df-xps 17557 df-mre 17631 df-mrc 17632 df-acs 17634 df-mgm 18666 df-sgrp 18745 df-mnd 18761 df-submnd 18810 df-mulg 19099 df-cntz 19348 df-cmn 19815 df-psmet 21374 df-xmet 21375 df-met 21376 df-bl 21377 df-mopn 21378 df-fbas 21379 df-fg 21380 df-cnfld 21383 df-top 22916 df-topon 22933 df-topsp 22955 df-bases 22969 df-cld 23043 df-ntr 23044 df-cls 23045 df-nei 23122 df-lp 23160 df-perf 23161 df-cn 23251 df-cnp 23252 df-t1 23338 df-haus 23339 df-tx 23586 df-hmeo 23779 df-fil 23870 df-fm 23962 df-flim 23963 df-flf 23964 df-xms 24346 df-ms 24347 df-tms 24348 df-cncf 24918 df-limc 25916 df-dv 25917

This theorem is referenced by: dvdivf 45878 dvdivbd 45879 fourierdlem56 46118 fourierdlem57 46119

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