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If f:R rarr R and f(x)=g(x)+h(x) where g(x) is a polynominal and h(x) is a continuous and differentiable bounded function on both sides, then f(x) is one-one, we need to differentiate f(x). If f'(x) changes sign in domain of f, then f, if many-one else one-one. f:R rarr R and f(x)=(x(x^(4)+1)(x+1)+x^(4)+2)/(x^(2)+x+1), then f(x) is

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one-one into
many-one onto
one-one onto
many-one into

Answer :d


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