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How can you tell what a real number is?
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it is basically any number
decimals while numbers anything or all
So how would you be able to estimate a domain and range if it's possible to have all real numbers?
well u just say the set of real numbers\[\in R\]
Ohhh!!! drr... Thank you!
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or you can use \[(-\infty,\infty)\]
To answer that question, it is better to know what are considered NON-REAL. Complex numbers(square root of a negative number), numbers resulting from division by zero are examples of NON-REAL numbers. Anything else that is well defined in Mathematics (irrational,pi, e, fractions, integers) are considered REAL.
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