Question

Find the domain of the function f(x)= (the square root of x^2-4)/x

Answer 1

Please help!

Answer 2

i) x is not zero

ii) because root function is always bigger than zero

x^2 - 4 >0

(x-2)(x+2)>0 x>2 or x<-2

so solution is intersection of the i) and ii)

x>2 , x<-2