limX*tan(1/x)趋向于无穷

limX*tan(1/x)趋向于无穷 由x趋向于正无穷,limx^(1/x)=1证明x趋向于0+,limx^x=1 limx趋向于无穷(cos1/x)^(x)的极限 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^3+2/3x+4 x趋向于无穷? limx趋向于正无穷求x+lnx/xlnx 计算极限：limx趋向于无穷,[（5x^2+1）/(3x-1)]sin1/x limx趋向于无穷x²-1/2x²-x-1求极限 limx趋向于无穷 (x+1/x+3）∧2x limx趋向于无穷,x²-1/x²-5x+4求极限 limx趋向于无穷时4x^3-2x+8/3x^2+1 limX趋向于无穷 求 (x^2+cos^2x-1)/(2x+sinx)^2 求极限：limx趋向于+无穷 √[x(x+1)]-1 求极限,limx趋向于正无穷ln(1+3^x)/(1+2^x) limx趋向于无穷(x^2+1)/(x+1)的值 limx趋向于正无穷,1/x积分号下由0到x |sint|dt 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