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#1 2009-01-15 02:11:48
- 1q2w3e4
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- Registered: 2009-01-11
- Posts: 10
Imaginary numbers!
What are imaginary numbers exept root of -1?
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#2 2009-01-15 03:30:32
- luca-deltodesco
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- Registered: 2006-05-05
- Posts: 1,470
Re: Imaginary numbers!
square root of -1, is named the imaginary unit 'i' there are an infinite amount of imaginary numbers, since you can have any real number, and multiply it by 'i' so you can have 3i 4.5i πi -7.8i etc.
you then have the complex numbers which are a superset of the real and imaginary so that you can have for example 3+4i 7-8i etc
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