Constrained optimization
Maximize xy subject to x+2y=12, x,y>=0. Substitute x=12-2y, so P(y)=12y-2y^2.
- P'(y)=12-4y; endpoints give zero.
- Apply the method to this new case and check the strongest alternative.
partial derivatives, gradients, multiple integrals, and optimization
Maximize xy subject to x+2y=12, x,y>=0. Substitute x=12-2y, so P(y)=12y-2y^2.
Pause. Find what matters. Then make your move.