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#1
July 10th, 2003, 04:15 PM
 Acheive
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Algorithm Design

hello everybody...

A complex number a+bi , where i=sqrt(-1) can be represented by the pair (a,b).Describe a method performing only three real-number multiplications to compute the pair (e,f) representing the product a+bi and c+di.

Thanks in anticipation

bye
chaitu

#2
July 10th, 2003, 05:29 PM
 heinrich
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WEIRD

if dont' wanna use the regular way of multiplication:
(a+bi)(c+di) = ac - bd + i(ad+bc)
you could use the trigonometry way:
but i don't see how u could reduce the number of multiplications to 3.

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