Find all the numbers for which the rational expression is undefined r^3-3r/r^2-49?-Collection of common programming errors
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discoverer: anonymous 
Use a comma to separate answers as needed. Write N if the answer is never undefined.
10 points to the correct answer 🙂
- because you can never divide by zero, your function will be undefined where the denominator=0 so r^2-49=0 where r=+7, -7
hope this helped!
Source of the problem： answers.yahoo
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Originally posted 2013-11-09 21:39:05.