Question: Find dw/dt (a) By using the appropriate Chain Rule (b) By converting w to a function of t before differentiating. w = In(x + y),

Find
dw/dt 

(a) By using the appropriate Chain Rule

(b) By converting w to a function of t before differentiating.

w = In(x² + y), x = 2t, y = 4 - t

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