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== Defination== | == Defination== | ||
| − | + | <pre> | |
Imaginary number comes to use when people want to refer to a number which could not be represented by any real number, | 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. When we combine a real number and an imaginary number together, we get a | such as the square root of a negative number. When we combine a real number and an imaginary number together, we get a | ||
complex number. | complex number. | ||
| − | + | </pre> | |
We use i to represent <math>sqrt(-1)</math>. | We use i to represent <math>sqrt(-1)</math>. | ||
Revision as of 18:36, 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. When we combine a real number and an imaginary number together, we get a
complex number.
We use i to represent $ sqrt(-1) $.
