Question: Find dz/dt when (a) z = e cos y, where x = 2t + f and y = 4t (b) z = x + fand

Find dz/dt when

(a) z = e* cos y, where x = 2t + f and y = 4t (b) z = x + fand x +21 + 3xt = 0.

(a) z = e cos y, where x = 2t + f and y = 4t (b) z = x + fand x +21 + 3xt = 0.

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