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Appendix:
Representation of complex numbers using magnitude and phase …(CM)

Here we will explain the amplitude and argument used in the complex number notation in each chapter.

The complex number C=a+jb can be expressed as follows using the amplitude r and argument φ:

電磁波に関する様々な公式の導出（吸収体）_125.png

The relationship between the parameters can be illustrated on the complex plane as follows: Here, the sign of the angle is again positive in the counterclockwise direction and negative in the clockwise direction.

(i) When a > 0,

電磁波に関する様々な公式の導出（吸収体）_128.png

(ii) When a < 0 and b ≥ 0,

電磁波に関する様々な公式の導出（吸収体）_126.png

(iii) When a < 0 and b < 0,

電磁波に関する様々な公式の導出（吸収体）_127.png

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