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Correct option is D
a→.b→=[xi→+(x-1)j→+k→]⋅[(x+1)i→+j→+ak→]=x(x+1)+x−1+a=x2+2x+a−1>0,∀x∈R,⇒a>2Similar Questions
The vector equation of the plane through the point and to the line of intersection of the plane and is
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