The regular price of a Space Invader game is $52, but it’s on sale. The discount is $13. What percent discount is the Space Inva
2 answers:
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Answer with step-by-step explanation:
We are given that a function
Differentiate partially w.r.t x
Then, we get
Differentiate again w.r.t x
Differentiate function w.r.t y
Again differentiate w.r.t y
Differentiate partially w.r.t y
Hence, if f(x,y) is of class (is twice continuously differentiable), then the mixed partial derivatives are equal.
i.e