Question

Let f prime (x) = 2/x and f (square root e) = 5 then f (e) =

Answer 1

f(x) = 2lnx +c so 5 = 1 +c after substitution.
Means c = 4 and f(x) = (2 lnx) +4 {NOT 2 ln(x+4)}
And so f(e) = 2+4=6.
So 6 is the answer