求定积分∫(2,0)e^(x/2)dx如题 怎么求

问题描述:

求定积分∫(2,0)e^(x/2)dx
如题 怎么求

∫(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-2