Asked by Ernie
What are the points of inflection for the function f(x)=xln(x)? Thanks a lot, you guys are the bomb!
Answers
Answered by
Damon
f'(x) = x (1/x) + ln x = 1 + ln x
f''(x) = 1/x
has no zeros except at infinity where the sign of the second derivative does not change anyway, no inflection points
f''(x) = 1/x
has no zeros except at infinity where the sign of the second derivative does not change anyway, no inflection points
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