Refer to PNG.
Explanation:
Domain
y^2 is in denominator
y^2[tex]\neq[/tex]0
y[tex]\neq[/tex]0
Range:
(f(x))^4=((f(x))^2)^2[tex]\geq[/tex]0
least value of |f(x)| is 0 when x=0
Lower bound of (3x^9y^-2)^4 is 0
Upper bound doesn't exist
