Find point of inflection for f(x) = p sqrt(x) – ln x

[Letsgopats]

Find point of inflection for f(x) = p sqrt(x) – ln x

for the equation f(x) = p √(x) – ln x , x>0 p is positive

for the certain value of k, the graph f has a point of inflection on the xaxis. what is the value of k?

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ok, so far I found the second derivative and I set it equal to zero, so I got

f''(x) =[ -p / 4√(x^3) ] + [ 1/(x^2)]

but how do I find the point of inflection?
:?:

 

[Deleted member 4993]

Re: Find point of inflection?

for the equation f(x) = p √(x) – ln x , x>0 p is posiive

for the certain value of k, the graph f has a point of inflection on the xaxis. what is the value of k?

---------------------------
ok, so far I found the second derivative and I set it equal to zero,
so I got
f''(x) =[ -p / 4√(x^3) ] + [ 1/(x^2)] but how do I find the point of inflection?
:?:

Find the roots of f"(x) - then find f(x) = y for those value/s of 'x'.