#about Matrix
nocturne notchBOT
bleak zinc
about Matrix
high timber
do you know what a singular matrix means?
bleak zinc
do you know what a singular matrix means?
it means det = 0
topaz thicket
it means det = 0
what have you tried?
ivory cobalt
it means det = 0
Determinant of this matrix is $3(x-2)-x(-1-2x)-(-1-x^2)=3x^2+4x-5$. So set that equal to 0.