f(x, y, z) = (2e x 3x)(5e y 2y)(e z z). Let A = (1, 1, 2) and B = (ln( 3 2 ), ln( 2 5 ), 0) be two points. For each point, check if it is a stationary point and determine whether it is a local minimum, a local maximum or a saddle point, when applicable