For what value of m with m < 0, is the area bounded by the lines y = x, y = mx and x = 2 equal to 3 ?

What is the derivative of cosec(x°) ?  

A solution of the differential equation

$\left(\frac{d y}{d x}\right)^2-x \frac{d y}{d x}=0 $ is

If f(x) = x² + 2 and g(x) = 2x - 3, then what is (fog)(1) equal to ?