i am so fucking frustrated.

[wickedcherub]

I can't even do question 1 of my latest maths assignment AND IT LOOKS SO FUCKING EASY.

FIND THE LOCAL MAXIMUM AND MINIMUM POINTS OF THE FUNCTION:

f(x,y) = x² + y² + 1/(x²y²)


WHY I CAN'T I DO IT. WHYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY.

I have half a page of workings that go nowhere.

I WANT TO GO ALL BANKAI ON ITS ASS.

Comments

[takewing.livejournal.com]

I've forgotten all the math I ever knew since I finished calculus last year or I'd try and help. :|

[kat8cha.livejournal.com]

Er.....

O_O

I wish I could help... but I uh.... can't?

Have you tried plugging it into a graphing calculator?

[akahannah.livejournal.com]

FIND THE LOCAL MAXIMUM AND MINIMUM POINTS OF THE FUNCTION

I DON'T EVEN UNDERSTAND WHAT THAT QUESTION MEANS!!! ;_;

[freesnowcone.livejournal.com]

Best I got:
http://en.wikipedia.org/wiki/Maxima_and_minima#Finding_maxima_and_minima

[seshat1.livejournal.com]

I know I know how to do this. I looked at the wiki page to jog my memory which helped. But am unsure if you need to diff wrt x, y or both.

wrt x the function becomes
df/dx= 2x - 2y^-2x^-3
if that helps. Probably not! :D

[o-chan.livejournal.com]

where's my graphic calculator when you need it...

[bonzabud.livejournal.com]

I used to be so good at maths, but I've forgotten EVERYTHING. It is not like riding a bike is it!