Asked by Sean
What is the integral of arctan x?
Answers
Answered by
Sean
Sorry. I lied.
Misread the question.
What is the indefinite integral of arccot(4x) ?
Misread the question.
What is the indefinite integral of arccot(4x) ?
Answered by
Count Iblis
arccot is simply related to arctan:
arccot(x) = pi/2 - arctan(x)
You can integrate arctan using partial integration. You get x arctan(x) - integral of xdx/(x^2+1), the latter integrand contans in the denominater the derivative of the numerator (up to a factor 2), so you get a logarithmic function.
arccot(x) = pi/2 - arctan(x)
You can integrate arctan using partial integration. You get x arctan(x) - integral of xdx/(x^2+1), the latter integrand contans in the denominater the derivative of the numerator (up to a factor 2), so you get a logarithmic function.
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