Show that a tangente line drawn to the curve y=x^3 at the point (d,f (d)), where d>0, forms a right triangle with x and y axes in quadrant 4 whose area is (2/3)d^4.
Show that a tangent line drawn to the curve y=x^3 at the point (d,f (d)), where d>0, forms a right triangle with the x and y axes in quadrant 4 whose area is (2/3)d^4.