1.

`int_(1)^(sqrt3)(dx)/(1+x^(2))` का मान ज्ञात कीजिए ।

Answer» `int_(1)^(sqrt3)(dx)/(1+x^(2))=[tan^(-1)x]_(1)^(sqrt3)`
`=tan^(-1)sqrt3-tan^(-1)1=(pi)/(3)-(pi)/(4)=(pi)/(12)`


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