` int _(2)^(k)(2x+1) dx = 6` then k is equal to

If the value of the integral int_(0)^(1//2) (x^(2))/((1-x^(2))^(3//2)) dx is (k)/(6) then k is equal to :

If int_(0)^(36) (1)/(2x+9)dx =log k , is equal to

If int_(0)^(36) (1)/(2x+9)dx =log k , is equal to

If int (2^x)/(sqrt(1-4^(x)))dx = k sin^(-1) (2^(x))+C , then k is equal to :

If int_(0)^(k) ( 1)/(9x^(2) + 1) dx = ( pi )/( 12) , then k is equal to

if int_ (-1//2) ^( 1//2) cos x log ((1 + x )/(1- x )) dx = k. log 2, then k equal to :

If int_(0)^(pi//2) ( cos x dx)/( 6-5 sin x + sin^(2) x)= log K then K is equal to