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微分方程(1-x
2
)y-xy′=0的通解y=____.
分类:
高等数学(工本)(00023)
发表:2024年09月14日 03时09分36秒
作者:
admin
阅读:
(3)
微分方程(1-x
2
)y-xy′=0的通解y=____.
【正确答案】:y=Cxe
-(1/2)x
2
。解析:分离变量得dy/y=[(1-x
2
)/x]dx,不定积分∫dy/y=∫(1/x)dx-∫xdx,lny=lnx-(1/2)x
2
+C′因此y=e
lnx-(1/2)x
2
+C′
=Cxe
-(1/2)x
2
(C=e
C′
)
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