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29 votes
29 votes
Find domain of function in interval notation.
f(x) = (7)/( x - 9)

User Ykok
by
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1 Answer

10 votes
10 votes

We have the following function:


f(x)=(7)/(x-9)

we can see that x can't be equal to 9 because we will get


\begin{gathered} f(9)=(7)/(9-9) \\ f(9)=(7)/(0)\longrightarrow\text{indeterminate} \end{gathered}

therefore, the domain is


x\in(-\infty,9)\cup(9,\infty)

User Alpinescrambler
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3.1k points