Previous Up Next

15.1.7  Equivalent matrix

The changebase command changes a matrix to represent the same linear function in a different basis.

Examples

changebase([[1,2],[3,4]],[[1,0],[0,1]])
     


12
34


          
changebase([[1,1],[0,1]],[[1,2],[3,4]])
     





−5−8
9
2
7





          

Indeed:

  


12
34


−1


 
·


11
01


·


12
34


=





−5−8
9
2
7





.

Previous Up Next