2.11.1.9 problem 9 out of 445

Link to actual problem [926] \[ \boxed {2 \ln \left (y\right )=-\frac {x y^{\prime }}{y}+4 x^{2}} \]

type detected by program

{"exactWithIntegrationFactor", "first_order_ode_lie_symmetry_calculated"}

type detected by Maple

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

Maple symgen result This shows Maple’s found \(\xi ,\eta \) and the corresponding canonical coordinates \(R,S\).\begin{align*} \left [\underline {\hspace {1.25 ex}}\xi &= 0, \underline {\hspace {1.25 ex}}\eta &= \frac {y}{x^{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 &=-x^{2} y +\ln \left (y \right ) y \\ \frac {dS}{dR} &= -\frac {2}{R} \\ \end{align*}