x趋向3(x^3 x^2 3x 27)/(x-3)求极限

x趋向3(x^3 x^2 3x 27)/(x-3)求极限 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)[1-(2/x)]^3x (2*arcsin x)/(3x)x趋向0的极限 lim(1+3x)^(2/x)x趋向于零 lim sin2x/3x x趋向0 (x^3+2x-3)/(x^2+5x-6) x趋向于1的极限 lim x趋向无穷 {（2x^3+x)sin (2/x) }/ x^2+1 求极限,lim(x趋向于1)(x^2-2x+1)/(x^3-x) Lim (1+x)(1+2x)(1+3x)-1除以x （x趋向0） limx^3+2/3x+4 x趋向于无穷? limx趋向无穷大,(1+1/x)^3x+2=? limx趋向1 2x+3/x-1 求极限 （1+3x)^(2/sinx) x趋向0 求极限 lim(x趋向于无穷)(1+3/x)^(x-3) lim(1+3x)^3/x x趋向于0 3^x/3^(x+1) x趋向无穷 求极限