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January 28, 2015

January 28, 2015

Posted by **mathstudent** on Wednesday, November 7, 2007 at 8:57pm.

Integral (sec x)^n dx

= Integral (sec x)^(n-2) * (sec x)^2 dx

= Integral ((tan x)^2 + 1)^(n/2-1) * (sec x)^2 dx

Doing a substitution with:

u = tax x

du = (sec x)^2 dx

= Integral (u^2 + 1)^(n/2-1) * du

At this point I'm stuck. Any ideas? Thanks!

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