qr Xcas-pc versus on-line Xcas

[compsystems]

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

[parisse]

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.

[compsystems]

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