Show that the function given by f (x) = e2x is increasing on R 3 Show that the function given by f (x) = sin x is
(a)
increasing in 0, 2
π






(b)
decreasing in 
π2,
π




(c) neither increasing nor decreasing in (0, π)
4 Find the intervals in which the function f given by  f (x) = 2x2 – 3x is
(a)
increasing
(b)
decreasing
5