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Question: Chain Rule

Question:Chain Rule

Antonio_S 259 Maple
January 02 2008
0
Hi, I have a task where x=r*exp(a) and y=r*exp(-a). f = g(x,y) I need to prove that df/dx=(exp(-a)/2*r) * (r*df/dr + df/da). The result I am getting is: df/dx=(exp(-a)/r) * (r*df/dr + df/da). Does not look difficult but I don't seem to be able to get 2 in the denominator. Any help would be appreciated! Thanks!
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