Calculus I: Test 2 Review (Second Sample Test)

[jan-willemreens]

...Good day to you Dr. Valerie, I just finished watching your clear exercises presentation, and just to be sure I wanted to ask in regards to question #5; I assume we can also possibly use the first derivative (increasing/decreasing intervals) to prove whether we are dealing with a maximium or minimum, right Dr. Valerie? There is a lot involved in optimization problems, so I try to copy your well-structured solution strategy as much as possible! One last little detail at about time 11:18 I assume you meant t-->0^+(- t) instead of t-->0(- t)... Dr. Valerie, thank you again for helping my voluntary tutoring projects with your as always great presentations ... Jan-W