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OpenStudy (anonymous):
what is a real-number?
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OpenStudy (anonymous):
Real numbers include all numbers except imaginary numbers.
OpenStudy (anonymous):
so just numbers? including negatives?
OpenStudy (unklerhaukus):
\[x \in \mathbb{R} \iff -∞<x < \infty\]
OpenStudy (anonymous):
yes including negatives. whole numbers, negatives, fractions, decimal, etc. are all real numbers.
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