and also
d^2y/dx^2 = ?
Steps please thanks!
NO MATHWOLFRAM!
更新1:
second part too please
second part too please
收錄日期: 2021-05-01 00:53:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111026041858AA5YQCL