Find the intervals in which the function f given by
`f(x) =sin x +cos x` , `0lt=x lt=2pi` is increasing or decreasing.

Find the intervals in which the function f given by f(x) = (4sin x-2x-xcos x )/(2+cosx) is (i) increasing (ii) decreasing.

Find the intervals in the function f is given by f(x) = sin x + cos x, 0 le x le 2pi is strictly increasing or strictly decreasing.

Find the intervals in which the function f given by f(x) = 2x^(3) – 3x^(2) – 36x + 7 is (a) increasing (b) decreasing

Find the intervals in which the function f given by f(x) = 2x^(2) - 3x is (a) strictly increasing (b) strictly decreasing.

Find the intervals in which the function f given by f(x) = x^(2) - 4x + 6 is (a) strictly increasing (b) strictly decreasing.

Find the intervals in which the function f given by f(x) = 2x^(2) – 3x is (a) increasing (b) decreasing

Find the intervals in which the function f given by f (x) = 4x^(3) – 6x^(2) – 72x+ 30 is decreasing.

Find the interval in which the function f given f(x) = 2x^2 - 3x is stricitly increasing

Find the interval in which the function f given by f(x)=2x^(2)-3x is strictly increasing.