What makes an expression undefined?
Understand the Problem
The question is asking about the conditions under which a mathematical expression becomes undefined. Typically, this happens in situations like division by zero, where the result lacks a valid numerical outcome.
Answer
When the denominator equals zero
An expression is undefined when any denominator equals zero.
Answer for screen readers
An expression is undefined when any denominator equals zero.
More Information
Expressions become undefined due to division by zero, which is not allowed in mathematics because it leads to results that are not meaningful.
Tips
A common mistake is forgetting to check all denominators in a rational expression. Always ensure you check each and solve for the variable.
Sources
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