y,=e^-x的通解

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y,=e^-x的通解y,=e^-x的通解y,=e^-x的通解设p=y’,y''''=dp/dx=e^-x,dp=e^-xdx,p=-e^-x+C1=y''dy=(-e^-x+C1)dx,y=e^-x+C1X

y,=e^-x的通解
y,=e^-x的通解

y,=e^-x的通解
设p=y’,y''=dp/dx=e^-x,dp=e^-xdx,p=-e^-x+C1=y'dy=(-e^-x+C1)dx,y=e^-x+C1X+C2