Let →a=4^i+5^j−^k,→b=^i−4^j+5^k, and →c=3^i+^j−^k. Find a – InterviewSolution

1.	Let →a=4^i+5^j−^k,→b=^i−4^j+5^k, and →c=3^i+^j−^k. Find a vector →d which is perpendicular to both →c and →b and →d.→a=21.
Answer» Let $\to a = 4^i + 5^j -^k, \to b =^i - 4^j + 5^k,$ and $\to c = 3^i +^j -^k$ . Find a vector $\to d$ which is perpendicular to both $\to c$ and $\to b$ and $\to d$ . $\to a = 21$ .

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