Set, Relation and FunctionHard
Question
Let f(x) be a differentiable function on interval (0, ∞) such that f(1) = 
and 
then f(2) has value equal to
and then f(2) has value equal toOptions
A.1
B.
C.
D.4/8
Solution
Using L-Hospital
⇒
⇒ x2f′(x) - 3xf(x) = - 1 ⇒
∴ y ×
f(1) =
⇒ c = 0∴ y =
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