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November 17th, 2011, 11:59 AM   #1
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find inverse of inverse function

I have to find the inverse of . I know usually you just swap x's and y's, but I'm confused here.
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November 17th, 2011, 12:58 PM   #2
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Re: find inverse of inverse function

Just undo it step by step. The reason this is the "inverse of inverse function" is that is the inverse of the tan function. If take the tangent of both sides: . Can you solve for x now?
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