Let *i* be an imaginary unit.

Let *x , y* be real numbers, *z* be a complex

COMPLEX(x , y) | Complex number x + y i |

RE(z) | The real part of z, i.e., RE(x + y i)= x |

IM(z) | The imaginary part of z, i.e., IM(x + y i)= y |

CONJ(z) | The conjugate of z, i.e., CONJ(x + y i)= x - y i |

ARG(z) | The argument of z, i.e., arg z . The result depends on the angle option.In case of angle radians, the result is greater than -π and not greater than π. In case of angle degrees, the result is greater than -180° and not greater than 180°, |

ABS(z) | The absolute value of z, |z| |

SQR(z) | The square root of z,
the argument of which is greater than that -π and not greater than π. For example, SQR(-1)=i. |

EXP(z) | The exponential function. |

LOG(z) | The natural logarithm of z, i.e., the complex number with real part log|z|, imaginary part arg z, where the unit is radians and is greater than π and not greater than π |

<Note> EXP(*z*) and LOG(*z*) are not affected by the angle option.