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real line
(redirected from Real number line)

   Also found in: Wikipedia 0.01 sec.
real line [′rēl ′līn]
(mathematics)
A straight line of infinite extent upon which the real numbers are plotted according to their distance in a positive or negative direction from a point arbitrarily chosen as zero. Also known as number line.


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Analysis studies functions, the real number line, and the ideas of continuity and limit.
After all, the real number line is an infinitely long, continuous expanse, while the counting numbers are just isolated milestones along this line.
In the complex plane, the Cartesian coordinates relate to the Y axis, designated as the imaginary, and the X axis, designated as the real number line.
 
 
 
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