scilab-6.1.1

Scilab Help >> Elementary Functions > Complex numbers > imag

# imag

imaginary part of complex numbers, polynomials, or rationals

### Syntax

y = imag(x)

### Arguments

- x
matrix of real or complex numbers (full or sparse storage), or of polynomials or rationals with real or complex coefficients.

- y
matrix of real numbers, polynomials or rationals, with same sizes than

`x`

.

### Description

`imag(x)`

is the imaginary part of
`x`

. (See `%i`

to enter complex
numbers).

### Examples

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

### See also

- real — real part of complex numbers, polynomials, or rationals

### History

Version | Description |

6.0 | Extension to rationals |

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