Imaginary Numbers Definition Imaginary numbers are the numbers when squared it gives the negative result. What does pure imaginary number mean? The square root of any negative number can be rewritten as a pure imaginary number. But in electronics they use j (because "i" already means current, and the next letter after i is j). 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. Examples of Imaginary Numbers Create your account. Therefore we say that the y-axis is the imaginary axis. Can you take the square root of −1? It can be done in the same manner as the previous ones, but there is a slightly easier way to do the problem.First, break up the fraction as follows. Pure imaginary complex numbers are of the form 0 + a*i, where a is a non-zero real number. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. An imaginary number, also known as a pure imaginary number, is a number of the form b i bi b i, where b b b is a real number and i i i is the imaginary unit. * * * Universalium. pure imaginary number. When are imaginary numbers used in real life? (-i^-38)/(5 -... Find the result of imaginary unit i. Pure Imaginary NumberImaginary numbers can thus be considered as complex numbers where the actual division is zero. What is an Imaginary Number? The pure imaginary part of the complex number needs to be represented on a second number line. In other words, imaginary numbers are defined as the square root of the negative numbers where it does not have a definite value. ... CallUrl('www>shelovesmath>comscarlet>be