(x^2+y^2)dx+2xydy=0怎么求通解!(x^2+y^2)dx+2xydy=0怎么求隐式通解!能不能通俗点!谢谢!我看过答案是 (x^2+y^2)dx+2xydy=0x^2dx+(y^2dx+2xydy)=0d(x^3/3)+d(xy^2)=0d(x^3/3+xy^2)=0x^3/3+xy^2=C可是这两步x^2dx+(y^2dx+
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![(x^2+y^2)dx+2xydy=0怎么求通解!(x^2+y^2)dx+2xydy=0怎么求隐式通解!能不能通俗点!谢谢!我看过答案是 (x^2+y^2)dx+2xydy=0x^2dx+(y^2dx+2xydy)=0d(x^3/3)+d(xy^2)=0d(x^3/3+xy^2)=0x^3/3+xy^2=C可是这两步x^2dx+(y^2dx+](/uploads/image/z/11575869-69-9.jpg?t=%28x%5E2%2By%5E2%29dx%2B2xydy%3D0%E6%80%8E%E4%B9%88%E6%B1%82%E9%80%9A%E8%A7%A3%21%28x%5E2%2By%5E2%29dx%2B2xydy%3D0%E6%80%8E%E4%B9%88%E6%B1%82%E9%9A%90%E5%BC%8F%E9%80%9A%E8%A7%A3%21%E8%83%BD%E4%B8%8D%E8%83%BD%E9%80%9A%E4%BF%97%E7%82%B9%21%E8%B0%A2%E8%B0%A2%21%E6%88%91%E7%9C%8B%E8%BF%87%E7%AD%94%E6%A1%88%E6%98%AF+%EF%BC%88x%5E2%2By%5E2%29dx%2B2xydy%3D0x%5E2dx%EF%BC%8B%28y%5E2dx%2B2xydy%29%EF%BC%9D0d%28x%5E3%2F3%29%EF%BC%8Bd%28xy%5E2%29%EF%BC%9D0d%28x%5E3%2F3%2Bxy%5E2%29%EF%BC%9D0x%5E3%2F3%2Bxy%5E2%EF%BC%9DC%E5%8F%AF%E6%98%AF%E8%BF%99%E4%B8%A4%E6%AD%A5x%5E2dx%EF%BC%8B%28y%5E2dx%2B)
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(x^2+y^2)dx+2xydy=0怎么求通解!(x^2+y^2)dx+2xydy=0怎么求隐式通解!能不能通俗点!谢谢!我看过答案是 (x^2+y^2)dx+2xydy=0x^2dx+(y^2dx+2xydy)=0d(x^3/3)+d(xy^2)=0d(x^3/3+xy^2)=0x^3/3+xy^2=C可是这两步x^2dx+(y^2dx+
(x^2+y^2)dx+2xydy=0怎么求通解!
(x^2+y^2)dx+2xydy=0怎么求隐式通解!能不能通俗点!谢谢!我看过答案是
(x^2+y^2)dx+2xydy=0
x^2dx+(y^2dx+2xydy)=0
d(x^3/3)+d(xy^2)=0
d(x^3/3+xy^2)=0
x^3/3+xy^2=C
可是这两步
x^2dx+(y^2dx+2xydy)=0
d(x^3/3)+d(xy^2)=0
是怎么变的!
(x^2+y^2)dx+2xydy=0怎么求通解!(x^2+y^2)dx+2xydy=0怎么求隐式通解!能不能通俗点!谢谢!我看过答案是 (x^2+y^2)dx+2xydy=0x^2dx+(y^2dx+2xydy)=0d(x^3/3)+d(xy^2)=0d(x^3/3+xy^2)=0x^3/3+xy^2=C可是这两步x^2dx+(y^2dx+
你未学过导数?
d(x^3/3)/dx = 1/3*3x^2 = x^2
相反就是积分过程
d(xy^2)/dx = y^2*dx/dx + x*d(y^2)/dx = y^2 + 2xy*dy/dx = y^2dx + 2xydy
将d提公因式出来
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