4 parts following these instructions
Find the critical numbers for f and the open intervals on which
f is increasing (decreasing)
For the first question, your answer should be a comma-separated
list of x values or the word "none". For the other two, your answer
should either be a single interval, such as (0,1), a
comma-separated list of intervals, such as (-inf, 2), (3,4), or the
word "none".
answeres needed for each part
1.
The critical numbers for f are...