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Question

Let f(x)=x[x]1+x[x],xϵ R, [ ]dentoes the greatest integer function.Then, the range of f is

A

(0,1)

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B

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C

[0,1]

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D

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Solution

The correct option is B


The graph of y = x – [x] is as shown below

When x is an integer, x – [x] = 0

Hence, f(x) = 0 when x is an integer

x[x]as x tends to an integer.As 1,x1+x12Hence , the range off(x) is[0,12)


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