question_answer 102)

Find the absolute maxima and minimum values of f(x) = cos2x + sin x,

Answer:

f(x) = cos2x + sin x,             f?(x) = 0              and               

X	0
f(x)	1	5/4	1	5/4	1

      Hence f(x) has absolute maximum value  at  and  and absolute minimum value = 1 at x = 0,