Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Vector Algebra Scalar and Vector Product
For any non-zero vector \(\vec{a}, [(\vec{a} \times \hat{i}) \times \hat{i}+(\vec{a} \times \hat{j}) \times \hat{j}+(\vec{a} \times \hat{k}) \times \hat{k}]\) equals
1
\(2\vec{a}\)
2
\(−\vec{a}\)
3
\(3\vec{a}\)
4
More than one of the above
5
None of the above