Question: Calculate all four second - order partial derivatives and check that f x y = f y x . Assume the variables are restricted to

Calculate all four second-order partial derivatives and check that fxy=fyx. Assume the variables are restricted to a domain on which the function is defined.
,f(x,y)=2sin(3x)cos(4y)
f=
fyy=
Calculate all four second - order partial

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