Find the net change in the value of the function between the given inputs

Answer 1

f(x+h) - f(x)

= the net change in the function's value or net change in output

for a given change in input.

input=x, output = f(x), net change in input = h

for example, if f(x) = x^2

then for a change in x from 2 to 4

net change in output

= f(4)-f(2)

= 4^2 - 2^2

= 16 - 4

= 12