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O-0-1-arctan-3X-3-1-2X-X-2-1-X-2-dX-




Question Number 129277 by liberty last updated on 14/Jan/21
 O = ∫_( 0) ^( 1)  ((arctan (((3X+3)/(1−2X−X^2 ))))/(1+X^2 )) dX
$$\:\mathrm{O}\:=\:\int_{\:\mathrm{0}} ^{\:\mathrm{1}} \:\frac{\mathrm{arctan}\:\left(\frac{\mathrm{3X}+\mathrm{3}}{\mathrm{1}−\mathrm{2X}−\mathrm{X}^{\mathrm{2}} }\right)}{\mathrm{1}+\mathrm{X}^{\mathrm{2}} }\:\mathrm{dX} \\ $$

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