Difference between revisions of "Imaginary number"

Latest revision as of 15:50, October 12, 2009

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-An '''imaginary number''' in mathematics is any number that contains the non-[[Real numbers|real]] [[square root]] of negative one, commonly referred to as ''i'':
+#REDIRECT [[complex number]]
-: <math>i = \sqrt{-1}</math>
-This number appears to "solve" some equations that would otherwise have no solutions. Much like division by zero, there is however an existence and uniqueness issue. This is also evident from the fact that the "scientific" [[calculator]]s which supposedly handle "imaginary" numbers, usually throw an error when one tries to compute the square root of negative one (just as when dividing by zero).
-The analysis of imaginary numbers forms the basis for the field of [[mathematics]] known as [[complex analysis]].
-[[category:mathematics]]