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Suppose bi and di are two complex purely imaginary numbers such that b and d are real.

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bi * di = bdi2 = -bd which is real.

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โˆ™ 2014-02-25 14:43:14
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Q: Are 2 purely imaginary complex numbers multiplication complex?
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Can a number be both complex and imaginary?

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Is the zero imaginary number?

An imaginary number is a square root of a negative number. Imaginary numbers have the form bi where b is a non-zero (real number) and i is the imaginary unit, defined as the square root of − 1.if we define 'imaginary numbers' as 'complex numbers having a real part as 'zero' and a non-zero imaginary part'.. 0 doesn't fit in this description. But by, convention and for theoretical symmetry , we'll have to define 'real numbers' in pretty much the same way, and hence 0 would neither be a purely imaginary number or a purely real number.Overall i would say that 0 is a real number. Imaginary numbers only involve square roots of negative numbers.http://wiki.answers.com/Is_the_zero_imaginary_number#ixzz16w9viQWx


Is the sum of two pure imaginary numbers always a pure imaginary number?

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Is the difference between two real numbers a real number?

Yes, I can't think of any way that a real number minus another real number would be complex or purely imaginary. My answer is yes.


Are skew symmetric roots purely real or purely imaginary?

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Is gazilian a real number?

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There are no rational numbers between sqrt(-26) and sqrt(-15). The interval comprises purely imaginary numbers.


What is a polynomial that does not factor over the real numbers referred to as?

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