sin(sinx)/x,x 趋于0的极限sin(sin(x))/x=[sin(sin(x))/sin(x)]*sin(x)/x=1*1=1sin(sin(x))/sin(x)这一部我不明白阿

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 10:03:28
sin(sinx)/x,x 趋于0的极限sin(sin(x))/x=[sin(sin(x))/sin(x)]*sin(x)/x=1*1=1sin(sin(x))/sin(x)这一部我不明白阿

sin(sinx)/x,x 趋于0的极限sin(sin(x))/x=[sin(sin(x))/sin(x)]*sin(x)/x=1*1=1sin(sin(x))/sin(x)这一部我不明白阿
sin(sinx)/x,x 趋于0的极限
sin(sin(x))/x
=[sin(sin(x))/sin(x)]*sin(x)/x
=1*1
=1
sin(sin(x))/sin(x)这一部我不明白阿

sin(sinx)/x,x 趋于0的极限sin(sin(x))/x=[sin(sin(x))/sin(x)]*sin(x)/x=1*1=1sin(sin(x))/sin(x)这一部我不明白阿
[sin(sin(x))/sin(x)] * 【sin(x)/x】
没看到后面分子上也补了一个sin(x)么,正好消去的~
这样子就凑成两对sin()/()的形式了
再都用罗必塔法则=1