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[Merged by Bors] - feat(measure_theory/interval_integral): variants of integral_comp lemmas #7103

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Alternate versions of some of our integral_comp lemmas which work even when c = 0.


As suggested by @hrmacbeth in #6795.

@benjamindavidson benjamindavidson added the awaiting-review The author would like community review of the PR label Apr 8, 2021
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bors r+
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@github-actions github-actions bot added ready-to-merge All that is left is for bors to build and merge this PR. (Remember you need to say `bors r+`.) and removed awaiting-review The author would like community review of the PR labels Apr 11, 2021
bors bot pushed a commit that referenced this pull request Apr 11, 2021
…mas (#7103)

Alternate versions of some of our `integral_comp` lemmas which work even when `c = 0`.
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bors bot commented Apr 11, 2021

Pull request successfully merged into master.

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@bors bors bot changed the title feat(measure_theory/interval_integral): variants of integral_comp lemmas [Merged by Bors] - feat(measure_theory/interval_integral): variants of integral_comp lemmas Apr 11, 2021
@bors bors bot closed this Apr 11, 2021
@bors bors bot deleted the comp_alt branch April 11, 2021 11:08
bors bot pushed a commit that referenced this pull request Apr 17, 2021
With #7103, I am able to improve one of my examples.
bors bot pushed a commit that referenced this pull request Apr 21, 2021
…→ 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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