# How do you optimize #f(x,y)=2x^2+3y^2-4x-5# subject to #x^2+y^2=81#?

##### 1 Answer

Mar 4, 2016

Maximum is 242, at

There is no minimum.

#### Explanation:

Using

f(x, y) = g(x) =

When

So, at

There is no other extreme value.