# One more limit ?

1. Sep 8, 2004

### cowgiljl

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. Sep 8, 2004

### matt grime

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").