Given f(x)=x+2,g(x)=2x+3,h(x)=3×+4 for x€ R find
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For any two elements x1
, x2 ∈ R such that f (x1
) = f (x2
), we have
4x1
– 1 = 4x2
– 1
⇒ 4x1
= 4x2
, i.e., x1
= x2
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