Asked by Anonymous
                Find the interval on which f(x)=xe^-x is increasing.
I got (1,infinity)..
            
        I got (1,infinity)..
Answers
                    Answered by
            Steve
            
    and you would be wrong. You have it exactly backwards.
f is increasing where f' > 0.
Better double-check your derivative.
    
f is increasing where f' > 0.
Better double-check your derivative.
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