at this point: dw/dt=[(6ye^x)(2tt^2 +1) + (6e^x)(1t^2+1) - (1/z)(e^t) Do I replace y ,x and z in the equation for the original values in the terms, ex. z=e^t ? thank you for your help

Time: 100 minutes Name: 3. For the given function, (a)express - dw 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 t. Then (b) evaluate - at the given value of t. dt w = 6yex - Inz, x = In(t2 + 1), y = tan-l t, z = et