Walnut support
 

How could I continue fixing a solution in certain period? We're focusing on revising regional opposites in differential calculus, and so I had, for example such as the answer to f'( x) := x-> cos( x )+sin( x) f'( x) > 0 within the period [0; 2π] The image for f' is fm I've attempted the Ti89 format with Maple's resolve purpose, like solve( fm( x) > 0, x)|0 < x < 2π However it doesn't work. Can there be a parameter for resolve that will give options to me inside a given period?