Calc-3-Local-Extrema-Global-Extreme-Behavior-and-Constrained-Optimization-and-Lagrange-Multipliers

Please see the attached pdf. All of the work is ungraded (nothing will be handed in to a professor), as the questions are just review for our exam. The most important piece is the steps to the solution/how to solve the problems, so I can understand how to do a similar question on an exam. This material is from a Calculus III college course. Thanks!