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发表于 2018-12-17 16:06
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An argument of the complex number z = x + iy, denoted arg(z)
Under both definitions, it can be seen that the argument of any non-zero complex number has many possible values: firstly, as a geometrical angle, it is clear that whole circle rotations do not change the point, so angles differing by an integer multiple of 2π radians (a complete circle) are the same, as reflected by figure 2 on the right. Similarly, from the periodicity of sin and cos, the second definition also has this property. The argument of zero is usually left undefined
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根据上面的定义,
幅角应该有多重选择呀、无穷多啊 |
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