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Find the domain of each of the following...

Find the domain of each of the following real valued function: `f(x)=(x-1)/(x-3)`

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Given,`f(x)=(x-1)/(x-3)`
When `x-3=0`
`x=3`
So,the domain is all values of x that make the expression defined.
Interval Notation: `(−oo,3)∪(3,oo)`
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