Imaginary numbers...............and 16th st............DC./

An imaginary number ^{[note 1]} is a complex number that can be written as a real number multiplied by the imaginary unit i, ^{[note 2]} which is defined by its property i² = −1. The square of an imaginary number bi is −b². For example, 5i is an imaginary number, and its square is −25.

Imaginary number - Wikipedia, the free encyclopedia

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Imaginary Numbers - Math is Fun

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Unit Imaginary Number. The "unit" Imaginary Number (the equivalent of 1 for Real Numbers) is √(−1) (the square root of minus one). In mathematics we use i (for imaginary) but in electronics they use j (because "i" already means current, and the next letter after i is j).

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An imaginary number ^{[note 1]} is a complex number that can be written as a real number multiplied by the imaginary unit i, ^{[note 2]} which is defined by its property i² = −1. The square of an imaginary number bi is −b². For example, 5i is an imaginary number, and its square is −25.

‎History · ‎Geometric interpretation · ‎Multiplication of square roots · ‎See also

Intro to the imaginary numbers | Khan Academy

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Sal introduces the imaginary unit i, which is defined by the equation i^2=-1. He then gets to know this special ...

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People also ask

Can you take the square root of a negative number?

Up until now, you've been told that you can't take the square root of a negative number. That's because you had no numbers which were negative after you'd squared them (so you couldn't "go backwards" by taking the square root). Every number was positive after you squared it.

Complex Numbers: Introduction - Purplemath

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Are imaginary numbers real numbers?

Essentially, an imaginary number is the square root of a negative number and does not have a tangible value. While it is not a real number — that is, it cannot be quantified on the number line — imaginary numbers are "real" in the sense that they exist and are used in math.

What Are Imaginary Numbers? - LiveScience

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When was imaginary numbers invented?

An illustration of the complex plane. The imaginary numbers are on the vertical coordinate axis. Although Greek mathematician and engineer Heron of Alexandria is noted as the first to have conceived these numbers, Rafael Bombelli first set down the rules for multiplication of complex numbers in 1572.

Imaginary number - Wikipedia, the free encyclopedia

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What is a complex number?

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit, which satisfies the equation i2 = −1. In this expression, a is the real part and b is the imaginary part of the complex number.

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A Visual, Intuitive Guide to Imaginary Numbers – BetterExplained

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Dec 21, 2007 - So-called “imaginary numbers” are as normal as every other number (or just as fake): they're a tool to describe the world. In the same spirit of ...

You visited this page on 8/21/16.