Explanation
The graph of the parent function of a cosecant function is given by
[tex]f(x)=\cos \sec x=\frac{1}{\sin x}[/tex]
Thus, the graph is given below
From the graph above, the difference in the Range of the function is 2
The expected graph is
The equation of the required cosecant function will be:
[tex]f(x)=\frac{7}{\sin\left(\frac{x}{2}\right)}-2[/tex]
