Review your text section (probably Lagrange multipliers), and see whether you can come up with this solution:
http://www.wolframalpha.com/input/?i=minimize+4y%5E2-29x%5E2+subject+to+3x%2By%3D21
find the extremum of f(x,y) subject to the given constraint, and state wether it is a maximum or minimum.
4y^2-29x^2; 3x+y=21
1 answer