Chapter 1.5, Problem 57E

The function f is given by f(x) = cos(x + 1). The solutions to which 6 of the following equations on the interval 0≤ x ≤ 2 are the solutions to f(x) = 1½ on the interval 0 < x < 2π? 2 A √√3 cos x - sin x = 1 B √√3 cos x + sin x = 1 C √3 sin x COS x = 1 D √√3 sin x + cos x = 1

Suppose that the graph below is the graph of f'(x), the derivative of f(x). Find the locations of all relative extrema, and tell whether each extremum is a relative maximum or minimum. Af'(x) Select the correct choice below and fill in the answer box(es) within your choice. (Simplify your answer. Use a comma to separate answers as needed.) -10 86-4-2 -9- B 10 X G A. The function f(x) has a relative maximum at x= relative minimum at x = and a B. The function f(x) has a relative maximum at x= no relative minimum. and has C. There is not enough information given. D. The function f(x) has a relative minimum at x= no relative maximum. and has E. The function f(x) has no relative extrema.

K Find the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema. f(x) = 12x+13x 12/13 Select the correct choice below and, if necessary, fill in any answer boxes within your choice. OA. There are no relative maxima. The function has a relative minimum of (Use a comma to separate answers as needed.) OB. There are no relative minima. The function has a relative maximum of (Use a comma to separate answers as needed.) OC. The function has a relative maximum of at x= (Use a comma to separate answers as needed.) OD. There are no relative extrema. at x= at x= and a relative minimum of at x=