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[" 13.Let function "f:R rarr R" be defin...

[" 13.Let function "f:R rarr R" be define by "f(x)=2x+sin x" for "x in R" .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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