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Question #35062

1 Answer

Apr 17, 2017

For #z = x + i y#, we have #Im(z) = y#,....., not #iy#. The imaginary part of a complex number is not imaginary.

So: #-3.13i xx -1.06i =-( -3.13 xx -1.06 )#

But: #Im(-3.13i) xx Im(-1.06i) = -3.13 xx -1.06 #

And generally:

#Im(x+iy) xx Im(u + i v) = yv#

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