` int _(0)^(pi//6) (2+3x^(2))cos 3 xdx ` is equal toA. `4/9-pi^(2)/18`B. `4/9+pi^(2)/18`C. `4/9-pi^(2)/36`D. `4/9+pi^(2)/36`

` int _(0)^(pi//6) (2+3x^(2))cos 3 xdx ` is equal toA. `4/9-pi^(2)/18`

1.	` int _(0)^(pi//6) (2+3x^(2))cos 3 xdx ` is equal toA. `4/9-pi^(2)/18`B. `4/9+pi^(2)/18`C. `4/9-pi^(2)/36`D. `4/9+pi^(2)/36`
Answer» Correct Answer - D

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`int_0^(pi//2)(theta/sintheta)^2d theta=`A. `pi/(log2)`B. `log 2`C. `pi log 2`D. `pi`