Find conditions on k that will make the matrix A invertible. To enter your answer, first select 'always', 'never', or whether k should be equal or not equal to specific values, then enter a value or a list of values separated by commas.

Question

Find conditions on k that will make the matrix A invertible. To enter your answer, first select 'always', 'never', or whether k should be equal or not equal to specific values, then enter a value or a list of values separated by commas.
A = −2  3  0
         2  k  0
       −4  5 −3

A is invertible:

Damon · Accepted Answer

-2 +3 + 0 +2 +k + 0 -4 + 5 - 3 determinant must NOT be zero 6 k +18 NOT = 0 k NOT -3