∫x^2dx^2,怎么算?
问题描述:
∫x^2dx^2,怎么算?
答
使u=x^2
则∫x^2dx^2=∫udu=u^2/2=x^4/2
∫x^2dx^2,怎么算?
使u=x^2
则∫x^2dx^2=∫udu=u^2/2=x^4/2