Q2: find dw/dt at given value point for the following function 1 1) w = x² + y², x = cos(t), y = sin(t), at t = π 2) w==+,x=cos² (t), y = sin² (t), z = -, at t = 3 Z 3) w = 2 ye* -In(z), x = ln(t² + 1), y = tan¯¹'(t), z = e¹, at t = 1

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