step-by-step explanation:
we have
using a graphing tool
see the attached figure
this is a quadratic equation (vertical parabola) open up
the vertex is a > vertex
the domain of the function is all real > interval (-β,β)
the range of the function is the > [-6.125,β)
the function has two x-> and
the function is increasing over the > (0.25,β)
the function is decreasing over the > (-β,0.25)