Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Digues quina de les següents matrius és la inversa de [[-a,1],[-3,2]]: -1/(2·a-3) [[-1/a,1/5],[-1/5,1/2]]; -1/(2·a-3) [[a,-1],[3,-2]]; -1/(2·a-3) [[2,-1],[3,-a]]; -1/(2·a-3) [[2,3],[-1,-a]]
Right answer summary: -1/(2·a-3) [[2,-1],[3,-a]]
Question state: todo