Complex Numbers

Some useful forms…
Rectangular Form
$A=a+jb$ Polar Form
$\left|A\right|<\alpha$
Eulers Form
$A=\left|A\right|e^{j\alpha }$ or $\left|A\right|\cos \alpha +j\left|A\right|\sin \alpha$
We can find the nth root by $w_k=r^{1/n}{e}^{j(\theta +2\pi k)/n}$ where k goes until n-1

The complex conjugate of a real number is itself, otherwise, its the imaginary part $\ast -1$.

You can convert between rectangular and polar form using the Pythagorean theorem (triangle shit).