Find domain and range:

Question

Question 1 :- f(x)=1⁄√9-x²
Question 2 :- f(x)=√x²-4

Answer 1

You can graph functions at www.desmos.com

 

#1

 9-x^2 >0 so the domain is (-3,3);

    range is [1/3, infinity)

 

 

#2

   x^2-4 >=0

    x<-2 or x>2

  range is [0,infinity]