The J (calc-conj
) [conj
] command computes the
complex conjugate of a number. For complex number a+bi, the
complex conjugate is a-bi. If the argument is a real number,
this command leaves it the same. If the argument is a vector or matrix,
this command replaces each element by its complex conjugate.
The G (calc-argument
) [arg
] command computes the
"argument" or polar angle of a complex number. For a number in polar
notation, this is simply the second component of the pair
`(r;@c{$\theta$}
theta)'.
The result is expressed according to the current angular mode and will
be in the range -180 degrees (exclusive) to +180 degrees
(inclusive), or the equivalent range in radians.
The calc-imaginary
command multiplies the number on the
top of the stack by the imaginary number i = (0,1). This
command is not normally bound to a key in Calc, but it is available
on the IMAG button in Keypad Mode.
The f r (calc-re
) [re
] command replaces a complex number
by its real part. This command has no effect on real numbers. (As an
added convenience, re
applied to a modulo form extracts
the value part.)
The f i (calc-im
) [im
] command replaces a complex number
by its imaginary part; real numbers are converted to zero. With a vector
or matrix argument, these functions operate element-wise.
The v p (calc-pack
) command can pack the top two numbers on
the the stack into a composite object such as a complex number. With
a prefix argument of -1, it produces a rectangular complex number;
with an argument of -2, it produces a polar complex number.
(Also, Building Vectors 参照 .)
The v u (calc-unpack
) command takes the complex number
(or other composite object) on the top of the stack and unpacks it
into its separate components.
Go to the first, previous, next, last section, table of contents.
利用度数