Question

for each of the following functions find f(a),f(a+h),f(a+h)-f(a)/h,lim h>0

a)f(x)=3-2x+4x^2

b)f(x)=x^4-5x

c)f(x)=2x+1/x+3

d) f(x)=x^2+1/x-2

Answer 1

a)

The function is

Find

Substitute