Let →a=2^i−^j+2^k and →b=^i+2^j−^k. Let a vector →v be in th – InterviewSolution

1.	Let →a=2^i−^j+2^k and →b=^i+2^j−^k. Let a vector →v be in the plane containing →a and →b. If →v is perpendicular to the vector 3^i+2^j−^k and its projection on →a is 19 units, then \|2→v\|2 is equal to
Answer» Let $\to a = 2^i -^j + 2^k$ and $\to b =^i + 2^j -^k$ . Let a vector $\to v$ be in the plane containing $\to a$ and $\to b$ . If $\to v$ is perpendicular to the vector $3^i + 2^j -^k$ and its projection on $\to a$ is $19$ units, then $\| 2 \to v \|^{2}$ is equal to

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