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Imaginary number  Wikipedia
An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit i, which is defined by its property i 2 = −1. The square of an imaginary number bi is −b 2. For example, 5i is an imaginary number, and its square is −25. Zero is considered to be both real and imaginary.
What Are Imaginary Numbers?  Live Science
Imaginary numbers become particularly useful in advanced calculus. Usually denoted by the symbol i, imaginary numbers are denoted by the symbol j in electronics (because i already denotes "current ...
Imaginary Numbers  Math Is Fun
Imaginary Numbers are not "Imaginary" Imaginary Numbers were once thought to be impossible, and so they were called "Imaginary" (to make fun of them). But then people researched them more and discovered they were actually useful and important because they filled a gap in mathematics ... but the "imaginary" name has stuck.
Imaginary Number  from Wolfram MathWorld
Imaginary Number. Although Descartes originally used the term "imaginary number" to refer to what is today known as a complex number, in standard usage today, "imaginary number" means a complex number that has zero real part (i.e., such that ). For clarity, such numbers are perhaps best referred to as purely imaginary numbers.
Imaginary Numbers (InCryptid, #9) by Seanan McGuire
Imaginary Numbers is the ninth book in the InCryptid series by Seanan McGuire. While I do suggest reading the series in order, and as a series, the books can stand fairly well on their own but newcomers will be missing out on some great backstory and character references that enhance the read.
A Visual, Intuitive Guide to Imaginary Numbers ...
Imaginary numbers always confused me. Like understanding e, most explanations fell into one of two categories:. It’s a mathematical abstraction, and the equations work out. Deal with it. It’s used in advanced physics, trust us.
Intro to the imaginary numbers (article)  Khan Academy
Intro to the imaginary numbers. This is the currently selected item. Simplifying roots of negative numbers. Practice: Simplify roots of negative numbers. Powers of the imaginary unit. Powers of the imaginary unit. Practice: Powers of the imaginary unit. i as the principal root of 1. Next lesson.
Intro to the imaginary numbers (video)  Khan Academy
In this video, I want to introduce you to the number i, which is sometimes called the imaginary, imaginary unit What you're gonna see here, and it might be a little bit difficult, to fully appreciate, is that its a more bizzare number than some of the other wacky numbers we learn in mathematics, like pi, or e.
Imaginary numbers: a brief history to these complex ...
Argand was also a pioneer in relating imaginary numbers to geometry via the concept of complex numbers. Complex numbers are numbers with a real part and an imaginary part. For instance, 4 + 2 i is a complex number with a real part equal to 4 and an imaginary part equal to 2 i .
Complex Numbers: Introduction  Purplemath
Anyway, this new number was called "i", standing for "imaginary", because "everybody knew" that i wasn't "real".(That's why you couldn't take the square root of a negative number before: you only had "real" numbers; that is, numbers without the "i" in them.)The imaginary is defined to be:
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