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Question

If f(x)={xsin1xx00x=0,then limx0 f(x)=


A

1

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B

0

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C

-1

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D

does not exist

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Solution

The correct option is B

0


Here f(0)=0
Since -1 ≤ sin 1x ≤ 1 ⇒ -|x| ≤ xsin 1x ≤ |x|

We know that limx0 |x| = 0 and limx0 - |x|=0

In this way limx0 f(x) =0


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