Multi-Variable Calculus Question

[Kirobaito]

I find x = y = 4*sqrt(C)/(6*sqrt(2)), and z = 3*sqrt(C)/(6*sqrt(2)), which probably doesn't help. xD

Anyway, were you taught about Lagrangian multiplicators/functions?

He taught those today, after this was due. Something like Gradient of f(x,y) = Lambda gradient g(x,y), right? I didn't really pay attention, because I worked crossword puzzles the whole period.

I eventually did something here or there, and came up with

X = Y = (Root2C)/3
Z = C/(2root2C)

Several other people came up with the same answer.