inv

The inv function generates the inverse matrix of an invertible square matrix provided as a block.

Syntax

inv(block)

The block argument is a block of numbers with real values in the form of a square matrix. The number of rows must equal the number of columns. The function returns a block of numbers with real values in the form of the inverse of the square matrix provided.

Example

• For the matrix:

  1.00	3.00	4.00
  2.00	1.00	3.00
  3.00	4.00	2.00

  
  in block(2,3,4,5) the operation block(2,7)=inv(block(2,3,4,5)) generates the inverse matrix:

  -0.40	0.40	0.20
  0.20	-0.40	0.20
  0.20	0.20	-0.20

  
  in block (2,7,4,9).