Imaginary number - Wikipedia, the free encyclopedia
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An imaginary number , in mathematics, is a number in the form bi where b is a real number and i is the square root of minus one, known as the imaginary unit. Imaginary numbers and real numbers...
en.wikipedia.org/wiki/Imaginary_number
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Complex number - Wikipedia, the free encyclopedia
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A complex number , in mathematics, is a number comprising a real number and an imaginary number; it can be written in the form a + bi , where a and b are real numbers, and i is the stand...
en.wikipedia.org/wiki/Complex_number
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The usual definition of complex numbers is all numbers of the form a+bi, where a and b are real numbers and i, the imaginary unit, is a number such that its square is -1. This gives no insight to where these came from nor why they were invented.
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www.und.edu/instruct/lgeller/complex.html
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The imaginary number takes mathematics to another dimension. It was discovered in sixteenth century Italy at a time when being a mathematician was akin to being a modern day rock star, when there was 'nuff respect' to be had from solving a particularly 'wicked' equation. ... Imaginary numbers are real numbers multiplied by i.
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www.bbc.co.uk/radio4/science/5numbers4.shtml
www.bbc.co.uk/radio4/science/5numbers4.shtml
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Programme 4: The Imaginary 'i'; The imaginary number takes mathematics to another dimension. It was discovered in sixteenth century Italy at a time when being a mathematician was akin to being a modern day rock star. ... Zero; Pi; Golden Ratio; Imaginary Number; Infinity; 5 Numbers Quiz;
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www.bbc.co.uk/radio4/science/5numbers.shtml
www.bbc.co.uk/radio4/science/5numbers.shtml
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Re: Who invented 'imaginary numbers'? Date: Sun Jun 7 16:54:23 1998; Posted By: David Winsemius, MadSci Admin; Area of science: Other; ID: 897168940.Ot ... Imaginary numbers are part of what are now called complex numbers. Their "existence" arose as people searched for solutions to quadratic and higher order...
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www.madsci.org/posts/archives/aug98/897257078.Ot.r.html
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Date: 09/04/97 at 23:19:43 From: Howard Engel Subject: "i" I have just discovered Dr. Math, as the result of a mention of the page in the Los Angeles Times this week. I think it useful to youngsters through grade 12. I have some comments to add to your presentation on imaginary numbers.
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mathforum.org/dr.math/problems/engel9.4.97.html
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As a consequence numbers that behaved like M,L, and S were called "imaginary" or "complex" with all the emotional baggage those terms carry.
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www.newton.dep.anl.gov/askasci/math99/math99095.htm
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So irrational numbers were discovered. (Please, pay attention: "discovered", not "defined" or "introduced") The completion of set of Real numbers had begun. Soon (after some centuries) the Great Gauss Theorem was proven: The polynomial algebraic equation of power n x^n + a1*x^(n-1) + ... Subject: history of imaginary numbers...
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www.pupman.com/listarchives/2004/March/msg01057.html
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