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Integrate the following functions: (cos2...

Integrate the following functions: `(cos2x+2 sin^2 x)/cos^2x`

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`(cos2x+2 sin^2x)/cos^2x)`
`=(1-2sin^2x+2sin^2x)/cos^2x = sec^2x`
therefore `int (cos2x+2sin^2x)/cos^2x) = tanx+c`
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