2.379 problem 955

Internal problem ID [8535]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 955.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_Abel, 2nd type, class C]]

Solve \begin {gather*} \boxed {y^{\prime }-\frac {-150 x^{3} y+60 x^{6}+350 x^{\frac {7}{2}}-150 x^{3}-125 y \sqrt {x}+250 x -125 \sqrt {x}-125 y^{3}+150 x^{3} y^{2}+750 y^{2} \sqrt {x}-60 y x^{6}-600 y x^{\frac {7}{2}}-1500 x y+8 x^{9}+120 x^{\frac {13}{2}}+600 x^{4}+1000 x^{\frac {3}{2}}}{25 \left (-5 y+2 x^{3}+10 \sqrt {x}-5\right ) x}=0} \end {gather*}

Solution by Maple

Time used: 0.027 (sec). Leaf size: 111

dsolve(diff(y(x),x) = 1/25*(-150*x^3*y(x)+60*x^6+350*x^(7/2)-150*x^3-125*y(x)*x^(1/2)+250*x-125*x^(1/2)-125*y(x)^3+150*x^3*y(x)^2+750*y(x)^2*x^(1/2)-60*y(x)*x^6-600*y(x)*x^(7/2)-1500*x*y(x)+8*x^9+120*x^(13/2)+600*x^4+1000*x^(3/2))/(-5*y(x)+2*x^3+10*x^(1/2)-5)/x,y(x), singsol=all)
 

\begin{align*} y \relax (x ) = \frac {2 \sqrt {c_{1}-2 \ln \relax (x )}\, x^{3}-2 x^{3}+10 \sqrt {c_{1}-2 \ln \relax (x )}\, \sqrt {x}-10 \sqrt {x}+5}{-5+5 \sqrt {c_{1}-2 \ln \relax (x )}} \\ y \relax (x ) = \frac {2 \sqrt {c_{1}-2 \ln \relax (x )}\, x^{3}+2 x^{3}+10 \sqrt {c_{1}-2 \ln \relax (x )}\, \sqrt {x}+10 \sqrt {x}-5}{5+5 \sqrt {c_{1}-2 \ln \relax (x )}} \\ \end{align*}

Solution by Mathematica

Time used: 0.634 (sec). Leaf size: 92

DSolve[y'[x] == (-5*Sqrt[x] + 10*x + 40*x^(3/2) - 6*x^3 + 14*x^(7/2) + 24*x^4 + (12*x^6)/5 + (24*x^(13/2))/5 + (8*x^9)/25 - 5*Sqrt[x]*y[x] - 60*x*y[x] - 6*x^3*y[x] - 24*x^(7/2)*y[x] - (12*x^6*y[x])/5 + 30*Sqrt[x]*y[x]^2 + 6*x^3*y[x]^2 - 5*y[x]^3)/(x*(-5 + 10*Sqrt[x] + 2*x^3 - 5*y[x])),y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \frac {2 x^3}{5}+2 \sqrt {x}-\frac {125}{125+\sqrt {-31250 \log (x)+c_1}} \\ y(x)\to \frac {2 x^3}{5}+2 \sqrt {x}+\frac {125}{-125+\sqrt {-31250 \log (x)+c_1}} \\ y(x)\to \frac {2}{5} \left (x^3+5 \sqrt {x}\right ) \\ \end{align*}