- Draw a picture of the scenario, if you can.
- Step(1) Formulate the objective function.
- Step(2) Reduce the objective function to One variable.
- Step(3) Take the derivative of the function and find the critical value(s).
- Step(4) Find the local max or min by either First derivative (for rational fractions ) or Second derivative test (polynomials) and check the end points to locate the max or min.