Real and Imaginary Parts

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Imaginary and real Numbers

$i$ as you may know, is a imaginary number and is defined as $\sqrt{-1}$ . The common form for writing an expression with $i$ , is $a+bi$ . There are two parts to this expression, the imaginary, and the real part.

Imaginary

$i$ is expressed with $i$ not ony because it looks cool (which it definitly is) but because it stands for imaginary. Now you might be able to guess which is the imaginary part. The imaginary part is i because imaginary means you cant plot it on a number line.

Real

The definition of real numbers are, unlike imaginary numbers, you can plot on a number line. So $a$ and $b$ always has to be the real parts or actual numbers.

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