lim (1+x)^5+(1+5x)/(x^2+x^5) x趋向于0

lim(1-(5/x))^x-2 lim（1-5/x）^x 1.lim x->∞ （2x/x^2+1)*cosx 2..lim x->∞{ [(x^2-x)arctanx]/x^3-x-5}3..lim x->0 （e^x-e^-x-2x)/(x-sinx) 4..lim x->0 (sinx-x)/(x^3) 5..lim x->0 (x^2*tanx)/(x-tanx) 6..lim x->0 (1+3/x)^2x 7..lim x->0 (1+2x)^(3/sinx) 8.lim x->∞ (x/1+x)^(x-3) 9..li 数学难题,求指教~~极限到底是什么玩意我还不懂.1.lim（x^2-2x+6）2.lim(x^2-4)/(x-2）3.lim(x^2-6x=8)/(x^-5x=4)4.lim[1/(1-x)-1/(1-x^3)5.lim(sin2x)/x^26.lim(sin5x)/x7.lim(tan3x)/(sin7x)8.lim[(1+x)/x]^2x例如这道例题~lim[(1/3)x+1] 帮忙`````````一些求极限的数学题一.求极限1.lim 3x^+2x+1x→12.lim x^+3x+2/x的三次方+4x^+5x→03.lim x^-1/x-1x→14.lim x^-3x+2/1-x^x→15.lim sin2x/5xx→06.lim sin3x/tan2xx→07.lim (1+x)的x分之2次方x→08.lim （1+2/n)的n次 lim(1-cosx)/5x x趋向0 lim(1-5/x)∧(2x+3) 用罗必达法则解 （见图）lim [(e^x)-1/sin（5x)]x->0lim [1-cos(5x)/1-cos(7x)]x->0lim x->0 [(8^x-7^x-1)/(x^2)-1]lim [1-(6/x)]^x x->∞ lim 7cos(3x)sec(9x)x->pi/2 求极限 x趋近于0 lim[(4^x-5^x)/2]^1/x求极限 x趋近于0 lim[(4^x-5^x)/2]^1/x lim((1+x)^5-(1+5x))/(x^2+x^5) x趋向于0 lim (1+x)^5+(1+5x)/(x^2+x^5) x趋向于0 lim(x^6+x^5)^(1/6)-(x^6-x^5)^(1/6) x趋近无穷大 lim(x->无穷)((-2)^x+5^x)/((-2)^(x+1)+5^(x+1)) lim(x+5)(2x-1)/(x^2-3x-1)球极限,x无穷大 lim (x->1) (x^2-6x+8)/(x^2-5x+4) 怎么算? lim ( x^3+4x+1)/(x^4+5x+4) x→无限 lim(x→∞)[(X^2+2x+5)/(3x^2-x+1) = lim(2^x+3^x+5^x)^(1/x)x-->正无穷