Functions Question 60
Question: There exists a function $ f(x) $ satisfying $ f(0)=1 $ , $ f’(0)=-1,\ f(x)>0 $ for all x and
[Kurukshetra CEE 1998]
Options:
A) $ f(x)<0 $ , $ \forall x $
B) $ -1<f’’(x)<0,,\forall x $
C) $ -2<f’’(x)\le -1,,\forall x $
D) $ f’’(x)<-2,,\forall x $
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Answer:
Correct Answer: D
Solution:
It is obvious.
BETA
