#3**+2 **

How do you find the domain and range of 1/square root of x-9

I think that this is what you intended?

\(f(x)=\frac{1}{\sqrt{x-9}}\)

Let see..

you cannot divide by 0 and the square root of a real number cannot be neg so the range must be greater than 0

x-9 cannot be negative so x>9

so the range is f(x)>0

and the domain is x>9

Here is the funtion

Melody
Sep 14, 2017

#1**+1 **

How do you find the range of 1/square root of x-9

Hello M!

\({\color{BrickRed}\frac{1}{\sqrt{x^{-9}}}}=\frac{1}{\sqrt{\frac{1}{x^9}}}=\sqrt{x^9}\color{blue}=x^4\sqrt{x}\)

sorry!

so

\({\color{BrickRed}\frac{1}{\sqrt{x-9}}}=\frac{\sqrt{x-9}}{x-9}\)

More is not possible.

Got it. The definition quantity of the function is searched for.

Thanks Melody!

\(f(x)=\frac{1}{\sqrt{x-9}}\\ \color{blue}9< x<\large ∞\)

!

asinus
Sep 14, 2017

#2**+1 **

thank u for your help however it is x minus 9 not x to the negative ninth

medlockb1234
Sep 14, 2017

#3**+2 **

Best Answer

How do you find the domain and range of 1/square root of x-9

I think that this is what you intended?

\(f(x)=\frac{1}{\sqrt{x-9}}\)

Let see..

you cannot divide by 0 and the square root of a real number cannot be neg so the range must be greater than 0

x-9 cannot be negative so x>9

so the range is f(x)>0

and the domain is x>9

Here is the funtion

Melody
Sep 14, 2017