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3 years ago

14

Which of the following is the conjugate of a complex number with 2 as the real part and 7i as the imaginary part? (5 points)

1 answer:

lisov135 [29]3 years ago

6 0

The complex conjugate of <span>7i</span><span> is </span><span>−7i </span>The complex conjugate of a number

z is a number with opposite imaginary part.

So if <span>z=a+bi</span> then conjugate is: <span><span>¯z</span>=a−bi</span> for any <span>a,b∈R</span>

We can note, that if we represent all complex numbers in coordinate system, then for any number: the number z and its conjugate <span>¯z</span> are symetrical according to "real part" axis.

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