2)F(x)=ax^2+lnx+2F'(x)=2ax+1/x=1/x*(2ax^2+1)当a>=0时,F'(x)>0,函数单调增当a
(2013•许昌二模)已知函数f(x)=x(lnx+1)(x>0). (Ⅰ)设F(x)=ax2+f
=0时,F'(x)>0,函数单调增当a"}}}'>
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