Trigonalisation can be done step by step on the TI89 using the LInear Algebra Made Easy at http://www.ti89.com/?a=LAME
For further information and examples:
https://fr.wikipedia.org/wiki/Trigonalisation#Exemples_de_trigonalisation
Trigonalisation can be done step by step on the TI89 using the LInear Algebra Made Easy at http://www.ti89.com/?a=LAME
For further information and examples:
https://fr.wikipedia.org/wiki/Trigonalisation#Exemples_de_trigonalisation