If `int_a^b(2+x-x^2)dx` is maximum, then `(a+b)` is equal to

int_a^b logx/x^2dx

int_a^b logx/x^2dx

int_(a)^(b)x^(2)dx

int_(b)^( a)x^(2)dx=

The interval [a ,b] such that the value of int_a^b(2+x-x^2)dx is maximum is a. [-1,2] b. [-2,1] c. [-2,-1] d. [1,2]

If f(a+b-x) = f(x) , then int_a^b x f(x) dx is equal to:

If f(a + b - x) = fx , then int_a^b x f(x) dx is equal to :

int_(a)^(b)(log x)/(x^(2))dx

int x^(2)(ax+b)^(-2)dx is equal to