`f:R to R"given by"f(x)=2x+|cos x|,` isA. one-one and intoB. one-one a – InterviewSolution

1.	`f:R to R"given by"f(x)=2x+\|cos x\|,` isA. one-one and intoB. one-one and ontoC. many-one and intoD. many-one and onto
Answer» Correct Answer - B Clearly, g `R to R` is given by g(x)=2x is a bijection. Also, it is strictly increasing function on R. Therefore, `f(x)=2x\|cos x\|` is also strictly increasing functions on R. Hence, it is one-one onto function.

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