ODE
\[ 4 x^3 y'(x)-4 x^2 y(x)+9 y(x) y'(x)^2=0 \] ODE Classification
[[_1st_order, _with_linear_symmetries]]
Book solution method
Change of variable
Mathematica ✓
cpu = 0.603582 (sec), leaf count = 133
\[\left \{\text {Solve}\left [\frac {\sqrt {x^6+9 x^2 y(x)^2} \tanh ^{-1}\left (\frac {x^2}{\sqrt {x^4+9 y(x)^2}}\right )}{x \sqrt {x^4+9 y(x)^2}}+2 c_1=\log (y(x)),y(x)\right ],\text {Solve}\left [2 c_1=\frac {\sqrt {x^6+9 x^2 y(x)^2} \tanh ^{-1}\left (\frac {x^2}{\sqrt {x^4+9 y(x)^2}}\right )}{x \sqrt {x^4+9 y(x)^2}}+\log (y(x)),y(x)\right ]\right \}\]
Maple ✓
cpu = 1.92 (sec), leaf count = 87
\[\left [y \left (x \right ) = -\frac {i x^{2}}{3}, y \left (x \right ) = \frac {i x^{2}}{3}, y \left (x \right ) = -\frac {2 \sqrt {x^{2} \textit {\_C1} +9}}{\textit {\_C1}}, y \left (x \right ) = \frac {2 \sqrt {x^{2} \textit {\_C1} +9}}{\textit {\_C1}}, y \left (x \right ) = -\frac {\sqrt {-4 x^{2} \textit {\_C1} +\textit {\_C1}^{2}}}{6}, y \left (x \right ) = \frac {\sqrt {-4 x^{2} \textit {\_C1} +\textit {\_C1}^{2}}}{6}\right ]\] Mathematica raw input
DSolve[-4*x^2*y[x] + 4*x^3*y'[x] + 9*y[x]*y'[x]^2 == 0,y[x],x]
Mathematica raw output
{Solve[2*C[1] + (ArcTanh[x^2/Sqrt[x^4 + 9*y[x]^2]]*Sqrt[x^6 + 9*x^2*y[x]^2])/(x*Sqrt[x^4 + 9*y[x]^2]) == Log[y[x]], y[x]], Solve[2*C[1] == Log[y[x]] + (ArcTanh[x^2/Sqrt[x^4 + 9*y[x]^2]]*Sqrt[x^6 + 9*x^2*y[x]^2])/(x*Sqrt[x^4 + 9*y[x]^2]), y[x]]}
Maple raw input
dsolve(9*y(x)*diff(y(x),x)^2+4*x^3*diff(y(x),x)-4*x^2*y(x) = 0, y(x))
Maple raw output
[y(x) = -1/3*I*x^2, y(x) = 1/3*I*x^2, y(x) = -2*(_C1*x^2+9)^(1/2)/_C1, y(x) = 2*(_C1*x^2+9)^(1/2)/_C1, y(x) = -1/6*(-4*_C1*x^2+_C1^2)^(1/2), y(x) = 1/6*(-4*_C1*x^2+_C1^2)^(1/2)]