dy/dx=y/(x+y的平方)
即
dx/dy=(x+y²)/y=1/y*x+y
即
dx/dy-1/y*x=y
所以
x=e^(∫(1/y)dy)(∫ye^(∫-(1/y)dy)dy+c)
=y(∫y*1/ydy+c)
=y(∫dy+c)
=y(y+c)
即
x=y²+cy
dy/dx=y/(x+y的平方) 這個題怎么求通解
dy/dx=y/(x+y的平方) 這個題怎么求通解
數(shù)學(xué)人氣:358 ℃時間:2020-04-09 05:40:21
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