Question: Calculate the gradient. Tx X,y = = &(x,y) 21 (Use symbolic notation and fractions where needed. Give your answer in the form {, %). )

Calculate the gradient. Tx X,y = = &(x,y) 21 (Use symbolic notation and fractions where needed. Give your answer in the form {, %). ) Let f(x, y) = 6x + 9y, r(t) = (+3, +2). Use the Chain Rule to calculate d f (r(t)) at the value t = -2. (Use symbolic notation and fractions where needed.) at f(r(1) =Let f(x, y) = x2 - 2xy, r(t) = (cos(t), sin(t)). Use the Chain Rule to calculate d f (r(t)) at the value t = (0). (Use symbolic notation and fractions where needed.)

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