这个要注意积分次序
曲线y=x^3与直线y=x的交点（0,0）（1,1）
∫[0,1]e^x^2∫[x^3,x] dxdy
=∫[0,1]e^x^2*(x-x^3)dx
=1/2e^x^2[0,1]-1/2∫[0,1]e^x^2*x^2dx^2
=1/2e^x^2[0,1]-1/2e^x^2*x^2[0,1]+∫[0,1]e^x^2dx^2
=1/2e^x^2[0,1]-1/2e^x^2*x^2[0,1]+e^x^2[0,1]
=e/2=e/2+e-1
=e-1
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