Verify that the matrix has no inverse. Type your answer below.

[-1 2 0
0 0 0
1 2 4 ]

Question

Verify that the matrix has no inverse. Type your answer below.

[-1 2 0 
  0 0 0 
 1 2 4 ]

anonymous · Answer

Easiest way is to find the determinant. If a determinant is equal 0, then the matrix has no inverse. You should be able to find the determinant by just looking at that particular matrix

anonymous · Answer

these questions are quite random
by which i mean from all over the place
this doesn't have an inverse because the second row has nothing but zeros
this tells you instantly that the determinant is zero,

anonymous · Answer

i am wondering what class this is with all these different types of problems

anonymous · Answer

it's algebra 2 but it has alot of calculus problems in it.

anonymous · Answer

not really calc, but still quite a hodgepodge

anonymous · Answer

This is not calculus lol, pretty much algebra. Calculus is all abstract math

anonymous · Answer

noo ,i didnt mean this problem was calculus , some of my other graphing problems are though.