Find the intervals in which f(x) = sin 3x, `x in [0,pi/2]` is (i) increasing, (ii) decreasing.

Find the intervals in which the function given by f(x) = sin 3x, x in [0, (pi)/(2)] is (i) increasing (ii) decreasing

Find intervals in which the function given by f (x) = sin 3x , x in [0,(pi)/(2)] is (a) increasing (b) decreasing.

Find intervals in which the function given by f (x) = sin 3x , x in [0,(pi)/(2)] is (a) increasing (b) decreasing.

Find the intervals in which function f(x) = sin x-cos x, 0 lt x lt 2pi is (i) increasing, (ii) decreasing.

Find the intervals in which function f(x) = sin x-cos x, 0 lt x lt 2pi is (i) increasing, (ii) decreasing.

Find the intervals in which function f(x) = sin x-cos x, 0 lt x lt 2pi is (i) increasing, (ii) decreasing.