Find constants a and b so that the minimum for the parabola f (x) = x2 + ax + boccurs at the point (-2, 3). a= b =Find the value of a so that the function f(x) = xe has a critical point at x = 3. NOTE: Enter the exact answer or round to three decimal places. a =................................................................................................................................................................. If U and V are positive constants, nd all critical points of F(t) : U6it + Ve't. Number of critical points: V NOTE: Enter the tcoordinate of the critical point