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If a=2hati+hatk,b=hati+hatj+hatkandc=4ha...

If `a=2hati+hatk,b=hati+hatj+hatkandc=4hati-3hatj+7hatk`, then find the vector `vecr` which satisfies `rxxb=cxxb and r.a=0`.

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The correct Answer is:
`-hati-8hatj+2hatk`
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ARIHANT PUBLICATION-QUESTION PAPER 2018-SHORT ANSWER TYPE QUESTIONS (ANSWER ANY THREE QUESTIONS)
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  6. Prove that [(veca+vecb,vecb+vecc,vecc+veca)]=2[(veca,vecb,vecc)].

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