limx^3+2/3x+4 x趋向于无穷?

limx^3+2/3x+4 x趋向于无穷? limx趋向于无穷x^2+2x-4/x^3-x^2 limx趋向于无穷时4x^3-2x+8/3x^2+1 limx趋向于无穷2x^2-4/3x^2-x 计算极限：limx趋向于无穷,[（5x^2+1）/(3x-1)]sin1/x limx趋向于无穷 (x+1/x+3）∧2x 高数求极限 limx趋向于3 (1-X/3)的1/x-3次方limx趋向于3 (X/3)的1/x-3次方limX趋向于无穷 （X-2/X+2）的X次方 求极限,limx趋向于正无穷ln(1+3^x)/(1+2^x) limx趋向于无穷(cos1/x)^(x^2)的极限 limx趋向于无穷(cos1/x)^(x^2)的极限 limX*tan(1/x)趋向于无穷 limx趋向于无穷x²+x/x的4次-3x²+1求极限 利用洛必达法则求limx趋向于正无穷lnx/x^3 求极限 limx趋向无穷(2x+3/2x+1)∧x+1 limx^3(sin1/x-1/2sin2/x) x趋向无穷 用无穷小量的性质求下列极限,1,x趋向于0,limx^2cos(1/x) 2,x趋向于无穷大,lim(arctanx/x) 3,x趋向于0 limx趋向于无穷(cos1/x)^(x)的极限 limx趋向无穷 根号x^2-3/3次根号x^3+1的极限