1. Find the following for the function f(x, y) = 3x³y² - 5x + 26y - 9. a. f(1,2)= b. fy(x, y) = c. fx(x, y) = d. fx(1,2)= e. fyy(x, y) = f. fxx (x, y) = g. fxy(x, y) = h. fyx (1,2)=

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