lim (x^3-x^2+4x)/(x^2+x) x→ 0

lim(x->0)((2-x)/(3-x))^1/x 求lim(x→0)x cos 1/x lim(x→∞)x^2/ (3x-1)的极限 lim[(4x^3-2x^2+x)/(3x^3+2x)] x→0,求极限. 几道求极限的高数题,lim1/x(tanπx/(2x+1)) x→∞lim x(x^x-1)x→0+lim(x^x^x- 求极限lim(x→2)(x^2-3x+2)/(x^2+4x-12) lim x→0 (x^2+2x-1)/(x^3-2x)的极限是多少 lim(x→0)[(1+X)(1+2X)(1+3x)-1]/x 1.4求极限lim(x→∞) (x^2+x)/ (x^4-3x^+1) lim(x→∞)(x^2+x)/(x^4-3x-1)的极限 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 lim(x→0)[（3x+1)/(4x-2)]^1/x 这道题怎么算极限 数学极限lim(x→0)((x^3)/(3*x^2-1)) lim(x→+无穷)(√x(x+2)-√(x^2-x+1))