Chapter 1, Problem 70RE

Let f(x)=cosx1+x2. a Use a graphing device to graph f in an appropriate viewing rectangle. b Determine from the graph if f is even, odd, or neither. c Find the minimum and maximum values of f.

If you travel 300 miles on the first day and then drive v miles per hour for t hours on the second day, then the total distance traveled over the teo-day period is given by d=300+vt miles. Use a formula to express v as a function of d and t for this two-day event.

For each exercise, functions of two angles are given. Which of the functions of the two angles is greater? Do not use a calculator. sec 5; sec 8