imag

虚部

呼び出し手順

y = imag(x)

引数

x: 実数または複素数のベクトルまたは行列.
y: matrix of real numbers, polynomials or rationals, with same sizes than x.

説明

imag(x)は, xの虚部です. ( 複素数を入力するには%iを参照ください).

例

c = [ 2 %i, 1+0*%i, 2-3*%i  log(-1) (-1)^(1/3) ]
imag(c)
s = sprand(3,3,0.3) + sprand(3,3,0.3)*%i
imag(s)

// Polynomials with complex coeficients:
A = [1-%i*%z (%z-%i)^2]
imag(A)

// Rationals with complex coeficients:
A = [ %z/(1-%z)  (1-%z)/%z^2];
B = A(1,[2 1]);
C = A + %i*B
B, imag(C)

参照

real — 実部

履歴

Version	Description
6.0	Extension to rationals

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Last updated:
Mon Feb 12 23:12:39 CET 2018