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e, i, and π (Posted on 2004-03-02) Difficulty: 2 of 5
i² = -1
e^(i π) = -1

(-e)^(i π) = ?

Simplify to a number without i. Leave e and π in their symbol forms.

  Submitted by Tristan    
Rating: 2.8571 (7 votes)
Solution: (Hide)
e^(iπ) = -1
(e^(iπ))^i = (-1)^i
e^(i²π) = (-1)^i
e^(-π) = (-1)^i
(e^(-π))*(e^i) = ((-1)^i)*(e^i)
e^(i-π) = (-e)^i
(e^(i-π))^(π) = ((-e)^i)^(π)
e^(iπ-π²) = (-e)^(iπ)
e^(iπ)*(e^(-π²) = (-e)^(iπ)
-(e^(-π²)) = (-e)^(iπ)

So, (-e)^(iπ) = -(e^(-π²))

Comments: ( You must be logged in to post comments.)
  Subject Author Date
AnswerK Sengupta2008-03-21 12:14:30
SolutionSolutionPraneeth2007-08-20 01:17:33
Anotehr elegant method...Kenny M2006-02-07 21:16:33
re: solution - text problemsTristan2004-03-02 20:14:10
Some ThoughtsNotes:Gamer2004-03-02 14:50:27
re: too easy for this siteCharlie2004-03-02 13:30:16
re(2): solutionCharlie2004-03-02 13:20:42
re(2): solutionRichard2004-03-02 13:14:05
re: solutionRichard2004-03-02 13:10:47
re: too easy for this siteSilverKnight2004-03-02 12:42:12
too easy for this sitered_sox_fan_0320032004-03-02 12:35:58
SolutionsolutionCharlie2004-03-02 09:08:39
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