Table of Contents

## What is IM in complex number?

A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the “imaginary unit”, that satisfies i2 = −1.

**How do you find the exponential of a complex number?**

If you have a complex number z = r(cos(θ) + i sin(θ)) written in polar form, you can use Euler’s formula to write it even more concisely in exponential form: z = re^(iθ).

**How do you find the complex conjugate of a complex number?**

You find the complex conjugate simply by changing the sign of the imaginary part of the complex number. To find the complex conjugate of 4+7i we change the sign of the imaginary part. Thus the complex conjugate of 4+7i is 4 – 7i. To find the complex conjugate of 1-3i we change the sign of the imaginary part.

### What does im mean in math?

imaginary

Im – imaginary part of a complex number (Also written as ).

**What is re z2?**

re (z2)=re[(x+iy)(x+iy)]

**What is the complex conjugate of 2 3i?**

Let us consider a few examples: the complex conjugate of 3 – i is 3 + i, the complex conjugate of 2 + 3i is 2 – 3i.

#### What is the imaginary part of a complex number called?

When in the standard form a a is called the real part of the complex number and b b is called the imaginary part of the complex number. Here are some examples of complex numbers. The last two probably need a little more explanation.

**What is an example of a complex number?**

Here are some examples of complex numbers. The last two probably need a little more explanation. It is completely possible that a a or b b could be zero and so in 16 i i the real part is zero. When the real part is zero we often will call the complex number a purely imaginary number.

**What is the formula for multiplying complex numbers by their conjugates?**

There is a nice general formula for this that will be convenient when it comes to discussing division of complex numbers. (a + bi)(a − bi) = a2 − abi + abi − b2i2 = a2 + b2 So, when we multiply a complex number by its conjugate we get a real number given by, (a + bi)(a − bi) = a2 + b2

## Can the real part of a complex number be zero?

It is completely possible that a a or b b could be zero and so in 16 i i the real part is zero. When the real part is zero we often will call the complex number a purely imaginary number. In the last example (113) the imaginary part is zero and we actually have a real number.