Magnitude of complex number

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1

<p>anyone know how to find the magnitude of a complex number? and show me with an example?</p>

<p>Thanks.</p>

2

<p>The complex number a + bi is represented in the complex plane as the point (a,b). The magnitude is the distance of this point from the origin, namely, sqrt(a^2 + b^2). So if for example you have the complex number 3 - 4i, its magnitude is sqrt(9 + 16) = 5.</p>