For the given functions, (a) express dw/dt as a function of t, both by using the chain rule and by expressing w in terms of t and differentiating directly with respect to to Then (b) evaluate dw/dt at the given value of t. w = 7y e^x - Inz, x = ln(t^2 + 1), y = tan^-1t, z=e^t;t = 1
(a) dw/dt =?