Application of DerivativeHard
Question
Let f(x) = 
Then, at x = 0, f has
Then, at x = 0, f hasOptions
A.a local maximum
B.no local maximum
C.a local minimum
D.no extremum
Solution
It is clear from figure that at x = 0. f (x) is not continuous.
Hence, f has no extremum at x = 0
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