Calculus Question

Rhenson

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Jun 10, 2007
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I need help finding the domain of the function for :
f(x) = square root x-1 over (x+2)(x-3).
 
Rhenson said:
I need help finding the domain of the function for :
f(x) = square root x-1 over (x+2)(x-3).
You need to tell us where you are. Have you heard of a Domain? What is it all about? Can denominators be zero? Are we stuck with Real Numbers? If so, can the argument of a square root be negative? This is a think question, not a calculate question.
 
Rhenson said:
I need help finding the domain of the function....
This may be a question from your calculus class, but you only need to use what you learned back in algebra. :wink:

The "domain" is all allowable x-values. To find the domain, find any values that would be a problem. So, in particular, look for vertical asymptotes (like for logs or for rational functions) and for negatives inside even-index roots.

Find the x-values that will not work. The domain is everything else! :D

Eliz.
 
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