A) \[f\] is continuous and differentiable at \[x=0\].
B) \[\underset{x\to -\infty }{\mathop{\lim }}\,f(x)=0\]
C) \[f\] has one local maxima and one local minima
D) \[f\] is decreasing function in (0, 1).
Correct Answer: A
Solution :
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