if fx 9x2 Domain is x is less than or equal to 0 Find the r

Solution

9-x^2 so x is less than or equal to 0.
so at x=0 9
and x=3 value =0 from then negative values so the range is [9 ,-)

and invers is y=9-x^2

so 9-y=x^2

(9-y)=f^-1(y) so domain is 9-y>=0

so 9>=y range is [0,)