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When is th ebest time to use it and what are some good rules of thumb for it?

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- Thread starter badtwistoffate
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- #1

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When is th ebest time to use it and what are some good rules of thumb for it?

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[tex]\int \sqrt{x^2+c^2}dx[/tex]

[tex]\int \sqrt{x^2-c^2}dx[/tex]

[tex]\int \sqrt{c^2-x^2}dx[/tex]

- #3

Tom Mattson

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- #4

HallsofIvy

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cos

tan

sec

Any time you have 1- x

- #5

TD

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TD said:

Yeah. At least for me, that has come up a lot in dealing with arc-length.

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TD

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Indeed, for example

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HallsofIvy

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TD said:

Yeah, but that wouldn't be a

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