Answer all a,b,c,d

13. Use the chain rule, in Leibniz notation, to find - at the given value of x. a. y = 3u2- 5u + 2, 1= 12- 1.x = 2 b. y = 213 + 312 1 = *+ 1.x= 1 c. y = u(u2+ 3). 1 = (x+3)2.1- -2 d. y = u - 5(u] - 7u)2. u = VI.x = 4