Scilab 6.1.0

Scilab Help >> Elementary Functions > Complex numbers > real

# real

real part of complex numbers, polynomials, or rationals

### Syntax

y = real(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

`real(x)`

components are the real part of related `x`

components (See `%i`

to enter complex numbers).

### Examples

real([1 %i 2]) real(1+0*%i) real(2+3*%i) real(1+%s) real(sprand(3,3,0.1)) // With polynomials: A = [1-%i*%z (%z-%i)^2] real(A) // With rationals: A = [ %z/(1-%z) (1-%z)/%z^2]; B = A(1,[2 1]) C = A + %i*B A, real(C)

### See also

- imag — imaginary part of complex numbers, polynomials, or rationals

### History

Version | Description |

6.0 | Extension to rationals |

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