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Question

Let c1=(1,0,0),c2=(1,1,0),c3=(1,1,1), and (c1,c2,c3) forms a system, then reciprocal of c1=

A
^i+^j
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B
^i^j
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C
^j^k
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D
^k^i
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Solution

The correct option is B ^i^j
we know,
Reciprocal of c1=c2×c3[c1c2c3](i)
c2×c3=∣ ∣ ∣^i^j^k110111∣ ∣ ∣=^i^j
and
[c1c2c3]=∣ ∣100110111∣ ∣=1
putting these values in (i),
we get, reciprocal of c1=^i^j

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