重积分的换元法
转自:http://wenku.baidu.com/link?url=_vFz9Cfb4VbYVQ-CuS_C7sYRVNMsHGY9VdHrAfQpWO7zopAZv_LpAvia8GUQopM2J7qO-oEgphQzHJRYERYHh1IGwhXUZtrDs9qUgLvZyh_
一个简单例子:
黄世宇/Shiyu Huang's Personal Page:https://huangshiyu13.github.io/
转自:http://wenku.baidu.com/link?url=_vFz9Cfb4VbYVQ-CuS_C7sYRVNMsHGY9VdHrAfQpWO7zopAZv_LpAvia8GUQopM2J7qO-oEgphQzHJRYERYHh1IGwhXUZtrDs9qUgLvZyh_
一个简单例子: