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== Review of Complex Number == | == Review of Complex Number == | ||
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| + | == Defination== | ||
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| + | Imaginary number comes to use when people want to refer to a number which could not be represented by any real number, such as the square root of a negative number. | ||
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| + | We use i to represent <math>sqrt(-1)</math>. | ||
Revision as of 17:33, 1 September 2008
Review of Complex Number
Defination
Imaginary number comes to use when people want to refer to a number which could not be represented by any real number, such as the square root of a negative number.
We use i to represent $ sqrt(-1) $.
