| Subject: | Re: negative real number |
|---|---|
| From: | |
| Date: | Sun, 30 Apr 2006 13:44:37 GMT |
| Newsgroups: | sci.math |
On Sat, 29 Apr 2006 15:29:42 GMT, "John Doe" <johndoe@xxxxxxxxxxx>
wrote:
' Have the decency to givw a valid e-mail address!
>Does anyone understand this question:
Obviously!
Thinking about a problem sometimes helps!
"i" is the complex number
i^2 = -1,
i^3 = -i,
i^4 = 1
so i^n = -1 for n = 2,6,10,14,18,22,26,30, ......
>(-i)^n is a negative real number if n =
>A 21
>B 22
>C 23
>D 24
>E 25
>Answer is 22
>
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