I have a Maple worksheet like this:
And have been unable to figure out how to find the intersection of the two, as fsolve returns an error?
Note that f is a function and g is an equation. And you want to solve f(x)=y, not f(x)=0. So your fsolve command should be
fsolve({f(x)=y, g}, {x,y}, x= -2..-1);
By changing the x-range, you can get all three intersection points this way. There is no need to give a y-range.