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`((lim)_(xvecoo)int0x(tan^(-1)t)^2dt)/(sqrt(x^2+1))h a st h ev a l u e` zero (b) `pi/4` (c) 1 (d) `(pi^2)/4`

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lim_(xto oo) (int_(0)^(x)(tan^(-1)t)^2dt)/(sqrt(x^(2)+1)) has the value a)zero (b) pi/4 (c) 1 (d) (pi^2)/4

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