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[" 9.Find "|vec x|" ,if for a unit vecto...

[" 9.Find "|vec x|" ,if for a unit vector "a" ,"],[" 10.If "vec a=2hat i+2hat j+3hat k,bar(b)=-hat i+2hat j+hat k" and "vec c=3hat i+hat j" are such that "bar(a)+lambdavec b" ."],[" perpendicular to "bar(c)" ,then find the value of "lambda" ."]

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