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You are not logged in. #1 20121216 00:36:52
Partial DerivativesHi, I have a function f(x,y). u = ax + by and v = bx  ay. a and b are constants. i need to prove that d2f/du2 + d2f/dv2 = 0. Last edited by malsch (20121216 22:12:24) #2 20121216 04:47:26
Re: Partial DerivativesYou said ". i need to prove that d2f/dx2 + d2f/dv2 = 0.". igloo myrtilles fourmis 