Question

Now, fill out the sign chart to see on which intervals the function is positive or negative. Interpret the meaning of the intervals in the context of the problem. How should I fill out the table? Is there anyone who can solve the problem?

Answer 1

The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.