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One more limit ?

  1. Sep 8, 2004 #1
    Can anybody help me get started on this the radical in the Numerator gots me lost.

    F(x) = 3-sq root x / 9-x has a removable discontinuity at x=9. define a new function g(x) such that g=f everywhere except at x = 9 , but is continuous everywhere.


    thanks joe
  2. jcsd
  3. Sep 8, 2004 #2

    matt grime

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    firstly you ought to bracket things to make it clear what is divided by what, secondly, can you write 9-x as a product of two factors (involving x^{1/2} perhaps, difference of two "squares").
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