∫(e^x)sin(x/2) dx
题目
∫(e^x)sin(x/2) dx
答案
∫(e^x)sin(x/2) dx=∫sin(x/2) d(e^x)=(e^x)sin(x/2) - (1/2)∫(e^x)cos(x/2) dx=(e^x)sin(x/2) - (1/2)∫cos(x/2) d(e^x)=(e^x)sin(x/2) - (1/2)(e^x)cos(x/2) - (1/4)∫(e^x)sin(x/2) dx将 -(1/4)∫(e^x)sin(x/2)...
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点