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| 1. |
`int_(1)^(sqrt(3))(1)/(1+x^(2))dx` का मान हैA. `(pi)/(3)`B. `(2pi)/(3)`C. `(pi)/(6)`D. `(pi)/(12)` |
| Answer» `int_(1)^(sqrt(3))(dx)/(1+x^(2))=int_(1)^(sqrt(3))(dx)/(1^(2)+(x)^(2))=[(1)/(1)tan^(-1)((x)/(1))]_(1)^(sqrt(3))=tan^(-1)sqrt(3)-tan^(-1)1=(pi)/(3)-(pi)/(4)=(pi)/(12)` | |