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Provide an example of two complex numbers in the form c + di and , where c, d, e, and f are positive real numbers such that their product lies in the other possible quadrant. Support your example by determining its product.

 Apr 30, 2020
 #1
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Two complex numbers: c+di and e+fi.

The product is (c+di)(e+fi) = ce+cfi+dei+dfi^2 = (ce-df)+i(cf+de)

Can you go from here?

 

You are very welcome!

:P

 Apr 30, 2020

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