求定积分∫(2,0)e^(x/2)dx
问题描述:
求定积分∫(2,0)e^(x/2)dx
如题 怎么求
答
∫(2,0)e^(x/2)dx
=2∫(2,0)e^(x/2)d(x/2)
=2∫(2,0)de^(x/2)
=2e^(x/2)|(2,0)
=2(e^2/2-e^0/2)
=2(e-1)
=2e-22e^(x/2)|(2,0)Ϊʲô��ֱ�ӵõ����������Ӧ����e^(x/2)��ʲô�����������e^(x/2)��֪������d[e^(x/2)]=e^(x/2)*d(x/2)