# complex numbers

• October 27th 2005, 05:07 PM
bwalters302
need help????
I need to find the absolute value of the following complex numbers??

2 + i and 3i - 2

• October 27th 2005, 05:09 PM
Jameson
Quote:

Originally Posted by bwalters302
I need to find the absolute value of the following complex numbers??

2 + i and 3i - 2

Ok. A little lesson in complex numbers. The absolute value of a complex number can be expressed by its magnitude, called $|z|$, which can be solved for by $z=\sqrt{a^2+b^2}$, where $a$ and $b$ are in the form of $a+bi$