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does it satisfy for every subset of R?

in Engineering Mathematics by Active (2.5k points) | 82 views

1 Answer

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every element in S will have unique identity and inverse,

for identity, e=0

x*0=x  { x+0+0*x = x  }

for inverse,

let y be inverse of x

x*y=0

x+y+xy=0

y=-x/(1+x)   { 1+x !=0)

x!= -1
by Active (2.6k points)

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