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if f x x then f x is increasing in interval
Question:
If f(x)=xˣ, then f(x) is increasing in interval
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Check derivative sign for monotonicity.
BITSAT - 2017
BITSAT
Updated On:
Mar 20, 2026
\([0,e]\)
\([0,\tfrac1e]\)
\([0,1]\)
None of these
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The Correct Option is
D
Solution and Explanation
f'(x)=xˣ(ln x+1) f'(x)>0 when ln x+1>0⟹ x>\tfrac1e. This interval is not listed.
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