Question

amie

求證此公式🙏

止 wedelilne eto beO when Ax 三 0, tthengebecomes acontinuous functlon of Ar. Thus,
for a differentiable function we can Wwrlte

了            Ay 二了(2 0     Were 5 文人as Axz 人4

and eis acontinuous function of Ax. Thls property of differentlable tunctlons 1S what
enables us to proye he Chain Rule.

Answer 1

Helck

在wiki搜連鎖律就有解答了。