HW Score: 54.2%, 5.96 of 11 points Part 3 of 4 Points: 0.5 of 1 For the given functions, (a) express dw at 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. dw W= - Z ,, x= sin 2 t, y= cos 2 t, z= ;t=3 a. Which of the equations represents an initial step of expressing - using the Chain Rule? dw dw &A. dt = (2sin tcos t) + = (-2 cos tsin t)+ X 2 y 2 dw sint cost O B. dt 4t 4t dw O c. dt -z(2sin tcos t)- z (-2cos tsin t)- NN / X dw sin t cost OD. dt 1/4t 1/4t What equation represents w in terms of t? W = 4t dw Express dt as a function of t. dw X y it 213-2