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Theorem taylpval 25785

Description: Value of the Taylor polynomial. (Contributed by Mario Carneiro, 31-Dec-2016.)

**Hypotheses**
Ref	Expression
taylpfval.s	⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
taylpfval.f	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
taylpfval.a	⊢ (𝜑 → 𝐴 ⊆ 𝑆)
taylpfval.n	⊢ (𝜑 → 𝑁 ∈ ℕ₀)
taylpfval.b	⊢ (𝜑 → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑁))
taylpfval.t	⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)
taylpval.x	⊢ (𝜑 → 𝑋 ∈ ℂ)

**Assertion**
Ref	Expression
taylpval	⊢ (𝜑 → (𝑇‘𝑋) = Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)))

Distinct variable groups: 𝐵,𝑘 𝑘,𝐹 𝑘,𝑁 𝜑,𝑘 𝑆,𝑘 𝑘,𝑋 Allowed substitution hints: 𝐴(𝑘) 𝑇(𝑘)

Proof of Theorem taylpval Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		taylpfval.s	. . 3 ⊢ (𝜑 → 𝑆 ∈ {ℝ, ℂ})
2		taylpfval.f	. . 3 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
3		taylpfval.a	. . 3 ⊢ (𝜑 → 𝐴 ⊆ 𝑆)
4		taylpfval.n	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
5		taylpfval.b	. . 3 ⊢ (𝜑 → 𝐵 ∈ dom ((𝑆 D^𝑛 𝐹)‘𝑁))
6		taylpfval.t	. . 3 ⊢ 𝑇 = (𝑁(𝑆 Tayl 𝐹)𝐵)
7	1, 2, 3, 4, 5, 6	taylpfval 25783	. 2 ⊢ (𝜑 → 𝑇 = (𝑥 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘))))
8		simplr 767	. . . . . 6 ⊢ (((𝜑 ∧ 𝑥 = 𝑋) ∧ 𝑘 ∈ (0...𝑁)) → 𝑥 = 𝑋)
9	8	oveq1d 7399	. . . . 5 ⊢ (((𝜑 ∧ 𝑥 = 𝑋) ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 − 𝐵) = (𝑋 − 𝐵))
10	9	oveq1d 7399	. . . 4 ⊢ (((𝜑 ∧ 𝑥 = 𝑋) ∧ 𝑘 ∈ (0...𝑁)) → ((𝑥 − 𝐵)↑𝑘) = ((𝑋 − 𝐵)↑𝑘))
11	10	oveq2d 7400	. . 3 ⊢ (((𝜑 ∧ 𝑥 = 𝑋) ∧ 𝑘 ∈ (0...𝑁)) → (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘)) = (((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)))
12	11	sumeq2dv 15621	. 2 ⊢ ((𝜑 ∧ 𝑥 = 𝑋) → Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑥 − 𝐵)↑𝑘)) = Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)))
13		taylpval.x	. 2 ⊢ (𝜑 → 𝑋 ∈ ℂ)
14		sumex 15606	. . 3 ⊢ Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)) ∈ V
15	14	a1i 11	. 2 ⊢ (𝜑 → Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)) ∈ V)
16	7, 12, 13, 15	fvmptd 6982	1 ⊢ (𝜑 → (𝑇‘𝑋) = Σ𝑘 ∈ (0...𝑁)(((((𝑆 D^𝑛 𝐹)‘𝑘)‘𝐵) / (!‘𝑘)) · ((𝑋 − 𝐵)↑𝑘)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 Vcvv 3466 ⊆ wss 3935 {cpr 4615 dom cdm 5660 ⟶wf 6519 ‘cfv 6523 (class class class)co 7384 ℂcc 11080 ℝcr 11081 0cc0 11082 · cmul 11087 − cmin 11416 / cdiv 11843 ℕ₀cn0 12444 ...cfz 13456 ↑cexp 13999 !cfa 14205 Σcsu 15604 D^𝑛 cdvn 25287 Tayl ctayl 25771

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 2702 ax-rep 5269 ax-sep 5283 ax-nul 5290 ax-pow 5347 ax-pr 5411 ax-un 7699 ax-inf2 9608 ax-cnex 11138 ax-resscn 11139 ax-1cn 11140 ax-icn 11141 ax-addcl 11142 ax-addrcl 11143 ax-mulcl 11144 ax-mulrcl 11145 ax-mulcom 11146 ax-addass 11147 ax-mulass 11148 ax-distr 11149 ax-i2m1 11150 ax-1ne0 11151 ax-1rid 11152 ax-rnegex 11153 ax-rrecex 11154 ax-cnre 11155 ax-pre-lttri 11156 ax-pre-lttrn 11157 ax-pre-ltadd 11158 ax-pre-mulgt0 11159 ax-pre-sup 11160 ax-addf 11161 ax-mulf 11162

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 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3371 df-reu 3372 df-rab 3426 df-v 3468 df-sbc 3765 df-csb 3881 df-dif 3938 df-un 3940 df-in 3942 df-ss 3952 df-pss 3954 df-nul 4310 df-if 4514 df-pw 4589 df-sn 4614 df-pr 4616 df-tp 4618 df-op 4620 df-uni 4893 df-int 4935 df-iun 4983 df-iin 4984 df-br 5133 df-opab 5195 df-mpt 5216 df-tr 5250 df-id 5558 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5615 df-se 5616 df-we 5617 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6280 df-ord 6347 df-on 6348 df-lim 6349 df-suc 6350 df-iota 6475 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-isom 6532 df-riota 7340 df-ov 7387 df-oprab 7388 df-mpo 7389 df-om 7830 df-1st 7948 df-2nd 7949 df-supp 8120 df-frecs 8239 df-wrecs 8270 df-recs 8344 df-rdg 8383 df-1o 8439 df-er 8677 df-map 8796 df-pm 8797 df-en 8913 df-dom 8914 df-sdom 8915 df-fin 8916 df-fsupp 9335 df-fi 9378 df-sup 9409 df-inf 9410 df-oi 9477 df-card 9906 df-pnf 11222 df-mnf 11223 df-xr 11224 df-ltxr 11225 df-le 11226 df-sub 11418 df-neg 11419 df-div 11844 df-nn 12185 df-2 12247 df-3 12248 df-4 12249 df-5 12250 df-6 12251 df-7 12252 df-8 12253 df-9 12254 df-n0 12445 df-z 12531 df-dec 12650 df-uz 12795 df-q 12905 df-rp 12947 df-xneg 13064 df-xadd 13065 df-xmul 13066 df-icc 13303 df-fz 13457 df-fzo 13600 df-seq 13939 df-exp 14000 df-fac 14206 df-hash 14263 df-cj 15018 df-re 15019 df-im 15020 df-sqrt 15154 df-abs 15155 df-clim 15404 df-sum 15605 df-struct 17052 df-sets 17069 df-slot 17087 df-ndx 17099 df-base 17117 df-plusg 17182 df-mulr 17183 df-starv 17184 df-tset 17188 df-ple 17189 df-ds 17191 df-unif 17192 df-rest 17340 df-topn 17341 df-0g 17359 df-gsum 17360 df-topgen 17361 df-mgm 18533 df-sgrp 18582 df-mnd 18593 df-grp 18787 df-minusg 18788 df-cntz 19133 df-cmn 19600 df-abl 19601 df-mgp 19933 df-ur 19950 df-ring 20002 df-cring 20003 df-psmet 20847 df-xmet 20848 df-met 20849 df-bl 20850 df-mopn 20851 df-fbas 20852 df-fg 20853 df-cnfld 20856 df-top 22302 df-topon 22319 df-topsp 22341 df-bases 22355 df-cld 22429 df-ntr 22430 df-cls 22431 df-nei 22508 df-lp 22546 df-perf 22547 df-cnp 22638 df-haus 22725 df-fil 23256 df-fm 23348 df-flim 23349 df-flf 23350 df-tsms 23537 df-xms 23732 df-ms 23733 df-limc 25289 df-dv 25290 df-dvn 25291 df-tayl 25773

This theorem is referenced by: (None)

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