Just need help on these problems.
1. Suppose that 3 < than or equal to (don't know how to do the sign) < than or equal to 5 for all values of x. Show that 18 < than or equal to [tex] f(8) - f(2) < than or equal to 30.
For all of the below:
(a) Find the intervals of increase or decrease.
(b) Find the local maximum and minimum values.
(c) Find the intervals of concavity and the inflection points.
3. , -2pi < or equal to t < or equal to 2pi