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Integral of tan^2

Name: Anonymous 2008-11-24 2:38

Integral (tan^2(x))dx
Halp.

Name: Anonymous 2008-11-24 3:30

tan^2(x) = sec^2(x) - 1

Integral(tan^2(x) dx) = Integral(sec^2(x) - 1 dx) = tan(x) - x.
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