Integral Of Arctangent | 97% of Students Failed

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Комментарии
Автор

... INT(ARCTAN(X))DX = INT(1ARCTAN(X))DX = XARCTAN(X) - INT(X/1 + X^2)DX = XARCTAN(X) - (1/2)INT(2X/1 + X^2)DX = XARCTAN(X) - (1/2)LN(1 + X^2) + C ... I think you made a mistake at time 1:36 ... - INT(x/1 + X^2)DX instead of - INT(1/1 + X^2)DX ... Thank you, Jan-W

jan-willemreens
Автор

On the second line, right hand end, the integrand should be xdx/(1+x^2)

johnpittmanhey