33)

Second Derivative Test. Consider the function rpm!) = 2x}: + 2ln(x) + By {a} The critical point of ay) is 0 {LB} 0 There is no critical point 0 {0,0} 0 (4,1;4} O (1,-1) O (1,!2,2} O (e,1) O i-LI) (b) Use the second derivative test for functions of two variables to determine that in part {a}: O the critical point is a local minimum 0 the critical point is a saddle point C) the critical point is a local maximum 0 the critical point is not in the domain 0 the second derivative test is inconclusive