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If A=[1-1 2 1],B=[a1b-1]a n d(A+B)^2=A^2...

If `A=[1-1 2 1],B=[a1b-1]a n d(A+B)^2=A^2+B^2+2A B ,` then `a=-1` (b) `a=1` (c) `b=-2` `b=2`

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RESONANCE DPP-JEE MAINS-All Questions
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  18. If f(x)=(log)x(logx) , then f'(x) at x=e is equal to......

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