Find the integral of tan^2x dx

You can not integrate tan2x but you can integrate sec2x Since sec2x = 1 + tan2x  Then tan2x = sec2x-1 so the intragral of tan2x dx = the integral of (sec2x-1) dx = intrgral of sec2x dx + integral of 1 dx = tanx-x +C

Answered by Nandini P. Maths tutor

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