ok, thanks for taking a look for starters,

here we go,

i have two functions y= sinx-cosx and y=2cos2x

ive selected an area that has been "trapped" by these two functions and must find the domain and range of the area selected, how do i go about doing this

i aslo need to find the points of intersection of the two functions in the area i chose , do i start by making both functions equal each other?, if so how do i solve that?

thanks again