Imag Funktion

Creates a imaginary number from a real number

Description

The function $$Imag$$ creates a imaginary number from a real number.

The value of the imaginary unit of a complex number is identified by a $$i$$. For example $$2 + 3i$$. The real number 3 is marked by the $$i$$ as an imaginary part.

However, the label described above can not be used if the real values are contained in variables such as $$a + b$$. In the expression $$a + bi$$, $$bi$$ would be interpreted as the name of a real variable. Here you can write instead:

$$a+imag(b)$$

Imag (x)

a=3
Imag(a)= 3i