Question d’entretien chez MathWorks

Is this matrix invertible?

Réponse à la question d'entretien

Utilisateur anonyme

10 juil. 2017

I used matrix operations to get my 2x2 into row echelon form. I can't remember the exact one he gave me but then he gave me a 3x3. I told him that would take me a lot longer and explained why.