# Discontinuities

• Sep 7th 2009, 05:07 PM
Nightasylum
Discontinuities
find the X value if any at which f is not continuous.
Which of the discontinuities are removable?

f(x)= X^2-9
Ok im not sure what im sopes to be doing here.
I know X = 3 the back of the book says the answer is "Continuous for all real x". Can any one help explain the answer, and help me with a few more.
• Sep 7th 2009, 05:11 PM
skeeter
Quote:

Originally Posted by Nightasylum
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Which of the discontinuities are removable?

f(x)= X^2-9
Ok im not sure what im sopes to be doing here.
I know X = 3 the back of the book says the answer is "Continuous for all real x". Can any one help explain why the answer, and help me with a few more.

huh?
• Sep 7th 2009, 05:19 PM
Nightasylum
Sorry about that not sure why it did that.