[Merged by Bors] - feat(analysis/special_functions/integrals): integral_comp for f : ℝ → ℝ
#7216
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…→ ℝ` (#7216) In #7103 I added lemmas to deal with integrals of the form `c • ∫ x in a..b, f (c * x + d)`. However, it came to my attention that, with those lemmas, `simp` can only handle such integrals if they use `•`, not `*`. To solve this problem and enable computation of these integrals by `simp`, I add versions of the aforementioned `integral_comp` lemmas specialized with `f : ℝ → ℝ` and label them with `simp`.
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f : ℝ → ℝf : ℝ → ℝ
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In #7103 I added lemmas to deal with integrals of the form
c • ∫ x in a..b, f (c * x + d). However, it came to my attention that, with those lemmas,simpcan only handle such integrals if they use•, not*. To solve this problem and enable computation of these integrals bysimp, I add versions of the aforementionedintegral_complemmas specialized withf : ℝ → ℝand label them withsimp.I choose to add the new lemmas to
analysis.special_functions.integralsand notmeasure_theory.interval_integralbecause:ℝmakes them specific enough to belong inanalysis.special_functions.integrals