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Question

The value of limxx3/2(x3+1x31) is

A
1
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B
-1
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C
0
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D
none of these
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Solution

The correct option is A 1
limxx3/2(x3+1x31)
=limxx3/2(x3+1x31)×(x3+1+x31)(x3+1+x31)
=limxx3/2(x3+1)(x31)(x3+1+x31)
=limxx3/22x3+1+x31
=limx21+1/x3+11/x3=22=1

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