e^(x^3/3)(y'+x^2y)=x^2e^(x^3/3)
(ye^(x^3/3))'=x^2e^(x^3/3)
两边积分:ye^(x^3/3)=e^(x^3/3)+C
y=1+Ce^(-x^3/3)
令x=2:1=1+Ce^(-8/3), C=0
所以y=1
e^(x^3/3)(y'+x^2y)=x^2e^(x^3/3)
(ye^(x^3/3))'=x^2e^(x^3/3)
两边积分:ye^(x^3/3)=e^(x^3/3)+C
y=1+Ce^(-x^3/3)
令x=2:1=1+Ce^(-8/3), C=0
所以y=1