Dividing Complex NumbersYou are currentlynot logged in Click here to log in |
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Given two complex numbers, $a+bi$ and $c+di,$ we can ask about the quotient:
The right-hand side multiples through, using the rules for multiplying rational numbers, to:
Using the rules of multiplying complex numbers we get:
Alternatively, we can express the numbers using the polar representation of a complex number:
Then the quotient is:
This uses the index laws that $\frac{x^a}{x^b}~=~x^{a-b}.$
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