[advabHixavoip]

How would I go on solving a trigonometric solution in a given interval? We're working on revising local extremes in differential calculus, so I'd, for instance like the solution to

f'(x) := x-> cos(x)+sin(x)

f'(x) > 0 within the interval [0; 2π]

The symbol for f' is fm

I've tried the Ti89 syntax with Maple's solve function, like
solve(fm(x) > 0, x) | 0 < x < 2π

But it doesn't work. Is there a parameter for solve that would give me solutions within a given interval?