July 10th, 2003, 04:15 PM
I am new to this forum...Could u please help out in solving the following...
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.
Please help me as soon as possible...
Thanks in anticipation
July 10th, 2003, 05:29 PM
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.