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Level 490

Operations with Complex Numbers


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imaginary unit i
i = √-1
complex number
includes real and imaginary numbers
imaginary number
the square root of a negative number
Complex conjugates
Two complex numbers of the form (a+bi) and (a-bi).
complex plane
coordinate system where real numbers intersect with imaginary numbers
|z| = √a² + b²
absolute value or a complex number
imaginary unit "i"
representation of the square root of negative one,
absolute value of a complex number
The absolute value of a + bi is the distance from the origin to the point (a,b) in the complex plane and is denoted |a+bi| = √a^2+b^2