1 Review of complex numbers - Columbia University

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1 Review of complex numbers 1.1 Complex numbers: algebra The set C of complex numbers is formed by adding a square root iof 1 to the set of real numbers: i2 = 1. Every complex number can be written ... z 2 = r 2(cos 2 + isin 2), we can ask for the polar form of z 1z 2: z 1z 2 = r 1(cos 1 + isin 1) r 2(cos 2 + isin 2) = r 1r 2((cos 1 cos 2 sin 1 ...

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1 Review of complex numbers - Columbia University 1 Review of complex numbers - Columbia University
1 Review of complex numbers 1.1 Complex numbers: algebra The set C of complex numbers is formed by adding a square root iof 1 to the set of real numbers: i2 = 1. Every complex number can be written ... z 2 = r 2(cos 2 + isin 2), we can ask for the polar form of z 1z 2: z 1z 2 = r 1(cos 1 + isin 1) r 2(cos 2 + isin 2) = r 1r 2((cos 1 cos 2 sin 1 ...
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