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Mirrors > Home > MPE Home > Th. List > itg1sub | Structured version Visualization version GIF version |
Description: The integral of a difference of two simple functions. (Contributed by Mario Carneiro, 6-Aug-2014.) |
Ref | Expression |
---|---|
itg1sub | ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘(𝐹 ∘f − 𝐺)) = ((∫1‘𝐹) − (∫1‘𝐺))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 486 | . . . 4 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → 𝐹 ∈ dom ∫1) | |
2 | simpr 488 | . . . . 5 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → 𝐺 ∈ dom ∫1) | |
3 | neg1rr 11910 | . . . . . 6 ⊢ -1 ∈ ℝ | |
4 | 3 | a1i 11 | . . . . 5 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → -1 ∈ ℝ) |
5 | 2, 4 | i1fmulc 24555 | . . . 4 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → ((ℝ × {-1}) ∘f · 𝐺) ∈ dom ∫1) |
6 | 1, 5 | itg1add 24553 | . . 3 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘(𝐹 ∘f + ((ℝ × {-1}) ∘f · 𝐺))) = ((∫1‘𝐹) + (∫1‘((ℝ × {-1}) ∘f · 𝐺)))) |
7 | 2, 4 | itg1mulc 24556 | . . . . 5 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘((ℝ × {-1}) ∘f · 𝐺)) = (-1 · (∫1‘𝐺))) |
8 | itg1cl 24536 | . . . . . . . 8 ⊢ (𝐺 ∈ dom ∫1 → (∫1‘𝐺) ∈ ℝ) | |
9 | 8 | recnd 10826 | . . . . . . 7 ⊢ (𝐺 ∈ dom ∫1 → (∫1‘𝐺) ∈ ℂ) |
10 | 2, 9 | syl 17 | . . . . . 6 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘𝐺) ∈ ℂ) |
11 | 10 | mulm1d 11249 | . . . . 5 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (-1 · (∫1‘𝐺)) = -(∫1‘𝐺)) |
12 | 7, 11 | eqtrd 2771 | . . . 4 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘((ℝ × {-1}) ∘f · 𝐺)) = -(∫1‘𝐺)) |
13 | 12 | oveq2d 7207 | . . 3 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → ((∫1‘𝐹) + (∫1‘((ℝ × {-1}) ∘f · 𝐺))) = ((∫1‘𝐹) + -(∫1‘𝐺))) |
14 | 6, 13 | eqtrd 2771 | . 2 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘(𝐹 ∘f + ((ℝ × {-1}) ∘f · 𝐺))) = ((∫1‘𝐹) + -(∫1‘𝐺))) |
15 | reex 10785 | . . . 4 ⊢ ℝ ∈ V | |
16 | i1ff 24527 | . . . . 5 ⊢ (𝐹 ∈ dom ∫1 → 𝐹:ℝ⟶ℝ) | |
17 | ax-resscn 10751 | . . . . 5 ⊢ ℝ ⊆ ℂ | |
18 | fss 6540 | . . . . 5 ⊢ ((𝐹:ℝ⟶ℝ ∧ ℝ ⊆ ℂ) → 𝐹:ℝ⟶ℂ) | |
19 | 16, 17, 18 | sylancl 589 | . . . 4 ⊢ (𝐹 ∈ dom ∫1 → 𝐹:ℝ⟶ℂ) |
20 | i1ff 24527 | . . . . 5 ⊢ (𝐺 ∈ dom ∫1 → 𝐺:ℝ⟶ℝ) | |
21 | fss 6540 | . . . . 5 ⊢ ((𝐺:ℝ⟶ℝ ∧ ℝ ⊆ ℂ) → 𝐺:ℝ⟶ℂ) | |
22 | 20, 17, 21 | sylancl 589 | . . . 4 ⊢ (𝐺 ∈ dom ∫1 → 𝐺:ℝ⟶ℂ) |
23 | ofnegsub 11793 | . . . 4 ⊢ ((ℝ ∈ V ∧ 𝐹:ℝ⟶ℂ ∧ 𝐺:ℝ⟶ℂ) → (𝐹 ∘f + ((ℝ × {-1}) ∘f · 𝐺)) = (𝐹 ∘f − 𝐺)) | |
24 | 15, 19, 22, 23 | mp3an3an 1469 | . . 3 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (𝐹 ∘f + ((ℝ × {-1}) ∘f · 𝐺)) = (𝐹 ∘f − 𝐺)) |
25 | 24 | fveq2d 6699 | . 2 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘(𝐹 ∘f + ((ℝ × {-1}) ∘f · 𝐺))) = (∫1‘(𝐹 ∘f − 𝐺))) |
26 | itg1cl 24536 | . . . 4 ⊢ (𝐹 ∈ dom ∫1 → (∫1‘𝐹) ∈ ℝ) | |
27 | 26 | recnd 10826 | . . 3 ⊢ (𝐹 ∈ dom ∫1 → (∫1‘𝐹) ∈ ℂ) |
28 | negsub 11091 | . . 3 ⊢ (((∫1‘𝐹) ∈ ℂ ∧ (∫1‘𝐺) ∈ ℂ) → ((∫1‘𝐹) + -(∫1‘𝐺)) = ((∫1‘𝐹) − (∫1‘𝐺))) | |
29 | 27, 9, 28 | syl2an 599 | . 2 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → ((∫1‘𝐹) + -(∫1‘𝐺)) = ((∫1‘𝐹) − (∫1‘𝐺))) |
30 | 14, 25, 29 | 3eqtr3d 2779 | 1 ⊢ ((𝐹 ∈ dom ∫1 ∧ 𝐺 ∈ dom ∫1) → (∫1‘(𝐹 ∘f − 𝐺)) = ((∫1‘𝐹) − (∫1‘𝐺))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2112 Vcvv 3398 ⊆ wss 3853 {csn 4527 × cxp 5534 dom cdm 5536 ⟶wf 6354 ‘cfv 6358 (class class class)co 7191 ∘f cof 7445 ℂcc 10692 ℝcr 10693 1c1 10695 + caddc 10697 · cmul 10699 − cmin 11027 -cneg 11028 ∫1citg1 24466 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-inf2 9234 ax-cnex 10750 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-pre-mulgt0 10771 ax-pre-sup 10772 ax-addf 10773 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-int 4846 df-iun 4892 df-disj 5005 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-se 5495 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-isom 6367 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-of 7447 df-om 7623 df-1st 7739 df-2nd 7740 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-1o 8180 df-2o 8181 df-er 8369 df-map 8488 df-pm 8489 df-en 8605 df-dom 8606 df-sdom 8607 df-fin 8608 df-sup 9036 df-inf 9037 df-oi 9104 df-dju 9482 df-card 9520 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-div 11455 df-nn 11796 df-2 11858 df-3 11859 df-n0 12056 df-z 12142 df-uz 12404 df-q 12510 df-rp 12552 df-xadd 12670 df-ioo 12904 df-ico 12906 df-icc 12907 df-fz 13061 df-fzo 13204 df-fl 13332 df-seq 13540 df-exp 13601 df-hash 13862 df-cj 14627 df-re 14628 df-im 14629 df-sqrt 14763 df-abs 14764 df-clim 15014 df-sum 15215 df-xmet 20310 df-met 20311 df-ovol 24315 df-vol 24316 df-mbf 24470 df-itg1 24471 |
This theorem is referenced by: itg1lea 24564 itgitg1 24660 itg2addnclem 35514 |
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