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Mathematics 15 Online
OpenStudy (castiel):

range of a function?

OpenStudy (castiel):

\[y=\sqrt{\ln \frac{ 1 }{ \left| x-2 \right|}}\]

OpenStudy (lyrae):

Range is the possible values of y. \[y = \sqrt{\ln{\frac{ 1 }{ |x - 2| }}} = \sqrt{-\ln{|x-2|}}\]The smallest possible value of y is when sqrt(-ln(|3-2|)) = 0 Small values for |x-2| results in ln producing huge negative numbers, which as |x-2| goes to 0 will tend to infinity. This give you the range\[y \ge 0, \space y \in \mathbb{R} \]

OpenStudy (lyrae):

tend to negative infinity*

OpenStudy (castiel):

Ahh I can look at it like as a limit as x->2. It took me a while but I figured it out. Thank you!

OpenStudy (lyrae):

Yeah, exactly! Yw :)

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