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Which of the following functions f has a...

Which of the following functions f has a removable discontinuity at `x=x_(0)`? If the discontinuity is removable, find a function g that agrees with f for `xnex_(0)` and is continuous on `RR`.
`f(x)=(3-sqrtx)/(9-x),x_(0)=9`

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The correct Answer is:
removable discontinuity
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PREMIERS PUBLISHERS-DIFFERENTIAL CALCULUS LIMITS AND CONTINUITY-SOLUTION TO EXERCISE 9.5
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