How do you find the instantaneous rate of change of f(x)=4x^2+4x−3 when x=4?
1 Answer
Apr 7, 2015
The instantaneous rate of change is equal to the slope of the tangent at the required point or, equivalently, the derivative of the function evaluated at that point.
If
then
the derivative is
Evaluating this derivative at
gives the instantaneous rate of change
