分段函数求导,求详细步骤

2025-01-19 16:55:47
推荐回答(1个)
回答1:

导数定义即
lim(x趋于0)
[f(x)-f(0)]/x
=lim(x趋于0)
(x²
sin1/x)/x
=lim(x趋于0)
x*
sin1/x
sin1/x是有界的,那么乘以趋于0的x
极限值显然为0