Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Determinants Evaluation of Determinants
If \(A = \,\left[ {\begin{array}{*{20}{c}} {\log x}&{ - 1}\\ { - \log x}&2 \end{array}} \right]\,\)and if det (A) = 2, then the value of x is equal to ?
1
2
2
e2
3
log 2
4
- 2