Calculus 3, five general problems, math homework help

Calculus 3, five general problems, math homework help

Asking for help with five general calculus problems. Attached are the problems, and the textbook I use for class.

I created the attached pdf the problems are listed in. The solutions to the problems should simplify to something fairly simple. If an answer to a problem appears to be something astronomical; it is possible that I might have a typo in the question.

Please list the steps to solving, try help me to understand how to complete these for myself.

I do not expect perfection, but I would like something intelligent as an answer. I might be unavailable for several hours. If you run into a hangup, please simply explain the issue. An intelligent answer will suffice.

Thanks! :)