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Find the requested value of the second derivative of the ...
Resolved Question:
Find the requested value of the second derivative of the function.
f(x) =ln x/3x ; Find f"(1).
Submitted:
10 years ago.
Category:
Homework
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Expert:
texeng
replied 10 years ago.
Hi,
f(x) = ln(x)/3x
f'(x) = {1/x*3x  ln(x)*3}/9x^2 = (1  ln(x))/3x^2
f''(x) = ((1/x)*3x^2  (1ln(x))*6x)/9x^4 = (9 +6ln(x))/9x^3 = (3 +2ln(x))/3x^2
Hope this helps and let me know if you have questions.
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Customer:
replied 10 years ago.
Which should I choose:
a. 9
b. ln 2/6
c.  1/6
d.  1
Expert:
texeng
replied 10 years ago.
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