MATBKSL

Scicos Block
fr - eng

##
MATBKSL:left matrix division

### Contents

- MATBKSL:left matrix division
  - Palette
  - Description
  - Dialog box
  - Example
  - Default properties
  - Interfacing function
  - Computational function
  - See also
  - Authors

### Palette

- Matrix - Matrix operation palette

### Description

The MATBKSL block outputs the left matrix division. It is a solution to A*x=B. The higher input is the A matrix, the lower one is the B matrix, and the output is x. If A is an M-by-N1 matrix, B must be a M-by-N2 where N1 and N2 can be different or equal. The output x is a N1-by-N2 matrix.
The equivalent of BACKSLASH is "ïn Scilab.

### Dialog box

- Datatype (1=real double 2=Complex)
  It indicates the type of the output. It support only the two types double (1) and complex (2). If we input another entry in this label Scicos will print the message "Datatype is not supported".
  Properties : Type 'vec' of size 1.

### Example

    A=[1 7 3;23 32 29]
    B=[21 18;13 10]
    then the result of the A*x=B equation is (A\B):
    x=[-4.504 -3.922;3.643 3.132;0.000 0.000]

### Default properties

- always active: no
- direct-feedthrough: yes
- zero-crossing: no
- mode: no
- regular inputs:
  - port 1 : size [-1,-2] / type 1
  - port 2 : size [-1,-3] / type 1
- regular outputs:
  - port 1 : size [-2,-3] / type 1
- number/sizes of activation inputs: 0
- number/sizes of activation outputs: 0
- continuous-time state: no
- discrete-time state: no
- object discrete-time state: no
- name of computational function: mat_bksl

### Interfacing function

- SCI/macros/scicos_blocks/MatrixOp/MATBKSL.sci [view code]

### Computational function

- SCI/routines/scicos/mat_bksl.c [view code]
- SCI/routines/scicos/matz_bksl.c [view code]

### See also

- MATDIV - MATDIV Matrix division (Scicos Block)
- MATMUL - MATMUL Matrix Multiplication (Scicos Block)

### Authors

Fady NASSIF INRIA