1. Write a C or C++function differentiate (Poly *f) where f is a pointer to a polynomial function f(x). Ex. f(x)=2xx+2x-2, after differentiation f'(x) = 6x - 2x + 2 Hint: Use the following definition for data type Poly: typedef struct node { int coeff; int exponent; struct node *next; } Poly; Poly *f;