lim(3x^2+2x-1)x趋向2,的极限

lim(x趋向无穷)[1-(2/x)]^3x lim(1+3x)^(2/x)x趋向于零 求lim(x趋向1）(x^2-3x+2)/（1-x^2)的极限 求lim[(3-2x)/(1-2x)]的x次方x趋向于∞ lim(x趋向无穷大)[1+2/(x+2)]^(x+2) lim(x^2+1)/(2x^+1) x趋向0 lim(x趋向0) x^2 / (sin^2) * x/3 lim(x趋向0) x^2 / (sin^2) * x/3 lim(x趋向无穷)-(x+1)+√(x^2+1) lim x趋向0 (1+cos^2(1/x))^x lim(1-2x)^1/x x趋向于0 lim(x趋向0)ln(1+sin x)/x^2 lim x趋向无穷大 (1+2/x)^x=? lim（x/（1+x^2））,x趋向无穷大 lim(x趋向于0)(x*cotx-1)/(x^2) lim(3x^2+2x-1)x趋向2,的极限 lim(x^3+1)(3+cosx)/2x^4-1(x趋向无穷大)的极限 求极限lim(3-2x)的3/x-1次幂x 趋向于1