1.\int x\cos^{-1}\left(\frac{1-x^2}{1+x^2}\right) dx;; ;(x>0)$ is equal toa.-x + (1+x^2)\cot^{-1}x + cb.x - (1+x^2)\cot^{-1}x + cc.x - (1+x^2)\tan^{-1}x + cd.-x + (1+x^2)\tan^{-1}x + cLogin to continueOnly logged in users canattempt or see the solution.
