A function f is called homogeneous of degree n if it satisfies the equation f (tx, ty)

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A function f is called homogeneous of degree n if it satisfies the equation f (tx, ty) = tnf (x, y)
for all t, where n is a positive integer and f has continuous second-order partial derivatives.
(a) Verify that f (x, y) = x2y + 2xy2 + 5y3 is homogeneous of degree 3.
(b) Show that if f is homogeneous of degree n, thenaf -nf(x, y) af + y* ду дх

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