求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))求极限,x趋向于0,lim(x^2/(sin(x/3)^2))

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 01:30:36
求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))求极限,x趋向于0,lim(x^2/(sin(x/3)^2))求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))求极限

求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))求极限,x趋向于0,lim(x^2/(sin(x/3)^2))
求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))
求极限,x趋向于0,lim(x^2/(sin(x/3)^2))

求极限,x趋向于0,lim(x的平方/(sin(x/3)的平方))求极限,x趋向于0,lim(x^2/(sin(x/3)^2))
利用等价无穷小 sin(x/3)^2 (x/3)^2
=lim(x^2/((x/3)^2))=9;

运用罗比达定理的 x^2 / (x/3)^2=9

用三角不等式做:sinx