∫[0,1]xf'(x)dx
=∫[0,1]2xe^2x dx
=∫[0,1]x de^2x
=x e^2x[0,1]-∫[0,1]e^2x dx
=e^2-1/2 e^2x [0,1]
=e^2-1/2( e^2-1)
=1/2( e^2+1)
我做的是正确的!