Considering the surface f(x,y)=xy and the constraint x2+y2=1 , answer to the following questions:
A. Using the Lagrange multipliers method we can obtain some possible maximum and minimum for ?=ï?±1/2
B. The Lagrange multipliers method is the most convenient
C. There are two absolute maximum and two absolute minimum
D. There is only one absolute maximum and one absolute maximum
Lagrange multipliers method is carefully applied.