1.

Let f(x) =2 sin x + cos 2x (0 le x le 2pi) and g(x) = x + cos x then

Answer»

g is a DECREASING function
f INCREASES on `(0, pi//2)`
f increases on `(0, pi//6) uu (pi//2, 5pi//6)`
f decreases on `(0, pi//2)`

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