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Derivative and Average Value

Please choose the correct answer:

2. If f(x) = (x + ln x)^2 , then f '(x) =

(2/x)(x + 1)(x + ln x)
(2/x)(1 + ln x)
(2/x)(x + 2)(x + 2 ln x)
(2/x)(x + 2 ln x)
(4/x)(1 + 2 ln x)
(4/x)(x + 2)(x + 2 ln x)
none of these

Q#11. The average value of f(x) = 1/x on the interval [2, 8] is

(ln 2)/3
6/5
(ln 6)/6
(ln 4)/2
0
1
none of these

Solution Summary

This shows how to determine average value and choose the correct derivative.

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