Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Que val "k" per a que cada matriu no tinga inversa {[[1,k,9],[0,1,k],[1,0,0]]; [[k,4],[1,k]]; [[2,1,k],[1,k,0],[0,1,k]]} -> {k=2, k=-2; k=0; k=3, k=-3}
Right answer summary: [[1,k,9],[0,1,k],[1,0,0]] -> k=3, k=-3; [[k,4],[1,k]] -> k=2, k=-2; [[2,1,k],[1,k,0],[0,1,k]] -> k=0
Question state: todo