Homework Statement
Derive the Derive the two variable second order Taylor series approximation,
below, to f(x,y) = x^3 + y^3 – 7xy centred at (a,b) = (6,‐4)
f(x,y) ≈ Q(x,y) = f(a,b) + \frac{∂f}{∂x}| (x-a) + \frac{∂f}{∂x}|(y-b) + \frac{1}{2!}[\frac{∂^2f}{∂x^2}| (x-a)^2 + 2\frac{∂^2f}{∂x∂y}\...