Question

Exercise 25.5. On the region in RP where x + 2y > 0, consider the function f(x, y) = 3x²y – 2xy + 2V x + 2y. (a) Compute the Hessian matrix symbolically (i.e., as a 2 x 2 matrix whose entries are functions of x, y). (b) Compute the Hessian matrix at (x, y) = (-1,1) and at (1,0) (as matrices whose entries are fractions). (c) Using (b), determine the quadratic approximations to f(-1 + h, 1+ k) and f(1 + h, k) for small numbers h and k (these are the quadratic approximations to f near (-1,1) and (1,0)).

Answer 1

Solution of above example is given below

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