Find the second-order Taylor formula for f(x, y) = (9x + 8y) at x = (0,0). Note that R (0, h) = 0 in this case. (Use symbolic notation and fractions where needed. Give your answer in the form of (h, h) = f(l, m) where I = h and m = h.) f(l, m) Incorrect = 81x +64y + 144xy Find the second-order Taylor formula for f(x, y) = 11 sin(xy) + 6 cos(xy) at (0, 0). (Use symbolic notation and fractions where needed. Give your answer in the form of f (h, h) = f(l, m) where 1 = h and = h.) m = f(l,m) = Incorrect 6+11xy +R (0, h)