若lim_(xto3)(f(x)-2sqrt(x+1))/(x^2)-9=-(1)/(16),则f(x)=().A. x+1B. x+5C. $\sqrt{x+
39【中等】(真题)设lim_(xto1)(x^3+ax-2)/(x^2)-1=2,求a的值.39【中等】(真题)设$\lim_{x\to1}\frac{x^{
lim_(x to 0) (1 - ax)^(2)/(x) = e^3,则a=A. $-3$B. $-\frac{3}{2}$C. $-2$D. $\frac{
3.设lim_(xtoinfty)((x+1)^3-(x-1)^3)/(2x^2)+3x+4=b(bneq0且bneqinfty),则a=____,b=____
设lim_(x to 0) (sin 2x + xf(x))/(x^3) = 1,则lim_(x to 0) (2cos x + f(x))/(x^2) = (
1 设lim_(xto0)(1+x+(f(x))/(x))^(1)/(x)=e^3,则lim_(xto0)(1+(f(x))/(x))^(1)/(x)=____
设 lim _(xarrow 0)dfrac (ln (1+x)-(ax+b{x)^2)}({x)^2}=2, 则设 lim _(xarrow 0)dfrac
lim_(xto0)(1+x^2)^(1)/(sin^(2)x)=()A. eB. -eC. $e^{-1}$D. 1
lim_(xto0)(1+2x)^(1)/(x)=填空题(共15题,30.0分)题型说明:共15题,每题2分。28.(2.0分)$\lim_{x\to0}(1+
设函数f(x)=x^2+3x-2,求lim_(xto1)f(x)的值。A. 2B. 4C. 6D. 8