2.11.3.21 problem 221 out of 445

Link to actual problem [8965] \[ \boxed {y^{\prime }-\frac {x^{2} \left (1+2 \sqrt {x^{3}-6 y}\right )}{2}=0} \]

type detected by program

{"first_order_ode_lie_symmetry_calculated"}

type detected by Maple

[[_1st_order, `_with_symmetry_[F(x),G(y)]`]]

Maple symgen result This shows Maple’s found \(\xi ,\eta \) and the corresponding canonical coordinates \(R,S\).\begin{align*} \\ \left [R &= -\frac {x^{3}-6 y}{6 x^{6}}, S \left (R \right ) &= -\frac {\ln \left (x \right )}{2}\right ] \\ \end{align*}

My program’s symgen result This shows my program’s found \(\xi ,\eta \) and the corresponding ODE in canonical coordinates \(R,S\).\begin{align*} \xi &= 0 \\ \eta &=2 x^{3} \sqrt {x^{3}-6 y}+2 x^{3}-12 y \\ \frac {dS}{dR} &= 0 \\ \end{align*}