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Answers to the comprehensive simulation test paper of college entrance examination mathematics nuclear button
(1): g(x) is derived, and it can be obtained that g(x) is increasing in [1/e, e]. Draw a rough image of g(x) and solve it according to the combination of numbers and shapes.

When? -E2

(2)h(x)=lnx/x5。 Take the derivative of h(x) and it will decrease in [2,+* *].

Then to the left