dy=-ydx

해법

d y = - y d x

y = e^{- x + c_{1}}

솔루션 단계

d y = - y d x

분리 가능한 ODE 해결:

y = e^{- x + c_{1}}

y = e^{- x + c_{1}}

x^{^{'}} = (\frac{2}{t} - t) x

\frac{2 x - 6}{25} + \frac{2 ( y - 5 ) ( \frac{d y}{d x} )}{9} = 1

(x^{2} + 6 x^{2} y^{2}) d x + e^{x^{3}} y d y = 0

y^{\frac{9}{2}} \frac{d y}{d x} - y^{4} = - y^{\frac{11}{2}}

\frac{d x}{d t} = 60 - \frac{x}{100}, x = 4000, t = 0