Consider the function g(x, y) = x² + xy + y² (1 + 1/2t, 2 + V3/2t), use the (a) Given the line l(t) chain rule to compute (g o l)’(0). (b) Compute the derivative of g(x, y) in the (1/2, V3/2) direction at the point (1, 2).

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A:

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A: