Hi may you please help me to get full credit? Please make sure answer coule fix the space below, as much is important information is fine to get full credit. thank you

Exercise 3 ( 20 Points ) Differentiate the following functions. a. V= 1 + +2 b. y = 31n(x2 +2) c. x-xyty' - 7(Note: use implicit differentiation to find dy/dx) d. y = sin (3x + 1) - tan (x2)