f(x)连续,且lim[x-->0]{f(x)/x-1/x-sinx/x^2}=2,f(0)=___.
lim[x-->正无穷]{ln(1+2^x)*ln(1+1/x)=____.
f(x)连续,且lim[x-->0]{f(x)/x-1/x-sinx/x^2}=2,f(0)=___.
lim[x-->正无穷]{ln(1+2^x)*ln(1+1/x)=____.
lim[x-->0]{f(x)/x-1/x-sinx/x^2}=lim[x-->0]{f(x)/x-1/x-x/x^2}=lim[x-->0]{f(x)/x-2/x}=2
lim[x-->0]{[f(x)-2]/x}=2
f(x)=2+2x
f(0)=2
lim[x-->正无穷]{ln(1+2^x)*ln(1+1/x)=
lim[x-->正无穷]{xln2*(1/x)}=ln2