engineering recuitment AAI JE Technical Mock Test 2020-21 Engineering Mathematics Linear Algebra Matrix Algebra
Find the value of x, if the given matrix \(\left[ {\begin{array}{*{20}{c}} 1&2&5\\ 2&x&{10}\\ 3&1&{ - 2} \end{array}} \right]\) is singular
1
4
2
- 4
3
\(\frac{1}{4}\)
4
\(- \frac{1}{4}\)