Find fax, fay and fry for the function f(x, y) = (1+x+y)e¯xy Select one: a. None of these b. fxx – (−2y + y² + x²y+y³) e¯xy, fxy = (−1 − 3x − 3y + xy + x²y + xy²)e¯xy, fyy = (-2x + x² + xy² + x³ ) e¯xy¸ = - (−2y + y² + xy² +y³) e¯xy, fxy =(−1 − 2x − 2y + xy + x²y + xy²)e¯xy, fyy = (-2x + x² + x²y + x³) e-xy c. fax XX = d. fxx = (-2y + y² + x²y+y³) e-xy XX 9 fyy = (-2x + x² + xy² + x³) e-xy fxy = (-1 – 2x – 2y + xy + x²y + xy²) e¯xy − 9 e. fxx = (-2y + y² + xy² + y³)e¯xy, fxy=(-1-3x − 3y + xy + x²y + xy² ) e¯xy, (-2x + x² + x²y + x³) e-xy. fyy =

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