lim[x→无穷][1/(1×3)+1/(3×5)+.+1/(2n-1)×(2n+1)]

lim x-无穷 (√3x^2+1)/x+1 lim(x趋向于无穷)(1+3/x)^(x-3) lim(x趋向无穷)[1-(2/x)]^3x lim趋向正无穷(x+1/x)^3x lim趋向正无穷(x+1/x)^3x lim(x~无穷)xsin1/x-1/xsinx lim（x->无穷）sinx-tanx/e^x^3-1 x趋近于无穷 lim [xsin(1/3x) ]=? lim 3次√(x^3-5x^2+1)-x X→无穷 lim x^n=?(x->1+) lim x^n=?(x->1-)n->无穷 n-> 无穷 利用无穷小量,计算下列极限x-无穷,lim（2x^3-x-1）x-无穷,lim arctan x/x 求极限lim(1+2/x)^2x+3x→正无穷 求lim(x->&无穷)sinn/n,求lim(x->无穷)sin(1/n) lim(360度-arctanx)/（e的3/x次方-1）x→正无穷 关于极限1.lim((x^-1) + (x^-4))/((x^-2) - (x^-3)) x-> 正无穷2.lim ((e^x) - (e^-x))/((e^x) + (e^-x)) x-> 负无穷 高数无穷大量与无穷小量lim(1+1/x^3)^x为什么不是无穷小量?极限是多少? lim(x+1/x+2)^x=?x趋于无穷 lim(x趋于无穷)(x/1+x)^(x+2)=?