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Question

f(x) = xloge x, x 1, is decreasing in interval

A
(0, e)
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B
(1, e)
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C
(e, )
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D
R
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Solution

The correct option is A (0, e)
f'(x) = logex.1x.1x(logex)2
=(logex1)(logex)2<0
It is decreasing at (0, e) – {1}



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