If f(x)=[x]2+sin[x][x] for [x]≠00 for [x]=0 where [x] denotes the greatest integer function, then limx→0 f(x) ,is
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a
1
b
0
c
-1
d
non-existent
answer is D.
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Detailed Solution
We have, limx→0− [x]=−1 and limx→0+ [x]=0∴ limx→0− f(x)=limx→0− (−1)2+sin(−1)(−1)=−1+sin1 and , limx→0+ f(x)=limx→0+ 0 [∵f(x)=0 for 0≤x<1]So, limx→0 f(x) does not exist.