Le forum de XCAS

Hello BP

Xcas-pc

qr([[1,2],[3,4]]) [↵] returns [[-0.316227766017,-0.948683298051],[-0.948683298051,0.316227766017]],[[-3.16227766017,-4.42718872424],[0,-0.632455532034]]

on-line Xcas returns in exact mode, Why?
session Xcas

PS: how do I copy the output (on-line Xcas) in plain text format?
Thank you

The desktop version is linked to lapack, not the javascript version.
If you want to copy the plain text version of an answer, double-click on it.

Thanks ^

qr([[1,2],[3,4]])) [↵] returns

matrix[[1/√10,3/5/(√10/5)],
[3/√10,-1/5/(√10/5)]],

[[√10,7/5*√10],
[0,√10/5]]

I observe the prefix matrix only in the first matrix, it must also be shown in the second