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Let the function f: RrarrR be defined b...

Let the function `f: RrarrR` be defined by `f(x)=2x+sinx` for `x in Rdot` Then `f` is (a)one-to-one and onto (b)one-to-one but not onto (c)onto but not-one-to-one (d)neither one-to-one nor onto

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