Each of these extreme value problems has a solution with both a maximum value and a minimum value. Use Lagrange multipliers to find the extreme values of the function subject to the given constraint.
(a) f(x,y) = x^2 −y^2, x^2 +y^2 = 1
(b) f(x,y) = x^2y, x^2 +y^4 = 5
(c) f(x,y) = xy, 4x^2 +y^2 = 8
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.