limx→∞（x^3-2x^2+1/5x^3+2)=?求详解,

1.limx→∞(1-1/2x)^x 2.limx→∞(1﹢x／x)^2x 3.limx→∞(1+1/x+3)^x 4.limx→0(1+2x)^1/x limx→∞(1+1/2x)^3x+2 limx→∞ 3x/x^2+5= limx→∞(2^x-1)/3^x=? limx→∞ (1+2/x)^(x+3)求极限 limx→∞ (2x^3-x+1) 求极限 limx→∞ (x+1)(x+2)(x+3)(x+4)/x^4 limx→∞{x-x^2*In(1+ x^-1) limx→∞[(x+1)/(x+2)]^x limx→∞ x平方-1 /2x平方-x limx→∞(x+3/x-2)^x求极限limx→∞(x+3/x-2)^x 求极限 求3个极限:limx→0 sin3x/2x=?limx→∞ xsin(1/x)=?limx→0 [sin(1/x)]/(1/x)=? limx→∞（x^3-2x^2+1/5x^3+2)=?求详解, limx→∞(1-2x)∧5(3x²+x+2)/(x-1)(2x-3)∧6 limx→ ∞ (x^2+3x-1)/(3x^2-2x+4)求极限, 求极限 limx→∞ 3x^2+x-1/4x^2-3x+2 limx→∞4x^2+4x-3/3x^2-2x+1 limx→∞(x^4+3x-1)/(3x^4+4x^2+1)