- #1

- 47

- 0

## Main Question or Discussion Point

How do you get the exponential form of 1/j? I saw a problem that says it's e^(-j*pi/2) but I have no idea where that came from.

Also, if you have a complex number, z, how do you find it's magnitude? For example, e^(j*pi*t - pi/2). In my book when they square the the magnitude of a complex number they multiply by the conjugate (e.g. |z|^2 = e^(j*pi*t - pi/2) * e^(-j*pi*t + pi/2) Why is this? Thanks for any help.

Also, if you have a complex number, z, how do you find it's magnitude? For example, e^(j*pi*t - pi/2). In my book when they square the the magnitude of a complex number they multiply by the conjugate (e.g. |z|^2 = e^(j*pi*t - pi/2) * e^(-j*pi*t + pi/2) Why is this? Thanks for any help.