lim[(α(x)/β(x)] x→a 时存在且limα(x)=0 x→a,求证 limβ(x)=0
lim(x→0)(sin5x)/x=?
lim(x→∞)[(a x^2)/x+1]+bx=lim(x→∞)(a x^2)+bx(x+1) / x+1=lim(x
x→+∞,lim(1+a/x)^x=?
lim (x→0)x-sinx/x
f(x)在x=0处连续,且x→0时,lim (f(2x)-f(x))/x = A(常数).求证 f(x)在x=0处可导,
高数 求极限 x→0时 lim(a^x-1)/x=?
lim(x→0)[e^x-e^(-x)]/sinx=?
lim(x→a)f(x)=A,证明lim(x→a)√f(x)=√A
f(x)=(1-a^(1/x))/(1+a^(1/x))(a>1),求lim(x→0)f(x)
洛必达法则(1)条件?(2)lim(x->0)P(x)/Q(x)=?已知:lim(x->0)P(x)=A(x),lim(
f(x)在x=a处有二阶导数,求证x趋于0时lim(((f(a+x)-f(a)/x}-f‘(a))/x=1/2f''(a
x→0时 lim(sinx-x)=多少