Question

Maximize P = xy with x + y = 6.

Answer 1

x + 2y = 36

x = 36 - 2y

P = xy

P(y) = (36-2y)y = 36y - 2y^2

P'(y) = 36 - 4y

Setting this equal to 0 gives y=9

x + 2y = 36

x + 2(9) = 36

x + 18 = 36

x = 18

Answer 2

Do you understand?

Answer 3

@ryanvarghese12790 , was that meant to be an example? because the constraint function doesnt match original post

Answer 4

it was just an example

Answer 5

ok you may want to state that so poster is not confused

Answer 6

Thank you!