SOLUTION: how can we convert complex number to real number?

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Question 11184: how can we convert complex number to real number?
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
when you say convert? you cannot convert them, as a complex number has both a real and an imaginary part.

However, multiplying any Complex number by its complex conjugate will produce a totally "real" number, but this is NOT the same number, ie you haven't "converted" it.

For a complex number a+bi, its conjugate is a-bi... in other words, just write the imaginary part with the opposite sign.

You can also find the "size" of a complex number by basically doing Pythagoras' theorem on it, so if z=a+bi, then magnitude of z, |z| is given by sqrt%28a%5E2+%2B+b%5E2%29

jon.