ts a simple question i think?.. But im not too sure what the answer is myself, which is obviously why im asking...
Ok, the question goes like this
Maximise and Minimise subject to .
I understand that i have to differentiate them in respect to x, y, and then lambda.. Rearrange them accordingly to find x and y.
Thats what i get.. Not sure where to go from there, i realise that i have to substitute bits in.. but ive tried everything, and cant really seem to get any further. thanks in advance
- . That makes a big big difference ......
Solutions are or or x = 6, y = 2 or x = - 6, y =-2.
Moral of the story: The method is usually OK but you should ALWAYS check the details.