- #1
nikk834
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Given that,
f(x,y)= x^3 + 3x^2y + 4xy^2 +2y^3
Prove that x df/dx + y df/dy = 3f
I need help at working this out. I have been trying to figure it out all day.
f(x,y)= x^3 + 3x^2y + 4xy^2 +2y^3
Prove that x df/dx + y df/dy = 3f
I need help at working this out. I have been trying to figure it out all day.