设x>=0,f(x)=x-1-ln^2x+2alnx(x.0).(1)令F(x)=xf'(x),讨论F(x)在(0,+无
设f(x)在x=0的某邻域内连续,且lim x→0 [xf(x)-ln(1+x)]/x^2=2,求f(0),并证明f`(
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设 f(x)在x=0存在二阶导数,lim(x→0)[xf(x)-ln(x+1)]/x^3求f(0)f'(0)f''(0)
求lim(x→0)[(xf'(x))/(2f(x))]^(1/x),其中f(x)在x=0点某邻域内有三阶连续导数,f(0
设f(x)在x=0连续,且lim(x+sinx)/ln[f(x)+2]=1x趋近于0,则f'(0)?
当x→0时,lim[ln(1+2x)+xf(x)]/x^2=2,求lim[2+f(x)]/x 要求详细解释
当x→0时,lim[ln(1+2x)+xf(x)]/x^2=2,求lim[2+f(x)]/x
当x→0时,lim[ln(1-2x)+xf(x)]/x^2=4,求lim[f(x-2)]/x
设a≥0,f(x)=x-1-(lnx)^2+2alnx(x>0) 求证:当x>1时,恒有x>(lnx)^2-2alnx+
设函数f(x)={ln(1-x)/x,x>0; -1,x=0; |sinx|/x,x
设f(x)=x(x+1)(x+2).(x+100),则f '(0)=
高数题求高手!设f(x)=ln{x-(x^2-x^2)^(1/2)},其中x>y>0,则f(x+y,x-y)等于?A.2