2.12.4.55 problem 355 out of 373

Link to actual problem [14426] \[ \boxed {y^{\prime }+y-\frac {{\mathrm e}^{t}}{y^{2}}=0} \]

type detected by program

{"bernoulli", "exactWithIntegrationFactor", "first_order_ode_lie_symmetry_lookup"}

type detected by Maple

[[_1st_order, _with_linear_symmetries], _Bernoulli]

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 &= 1, \underline {\hspace {1.25 ex}}\eta &= \frac {y}{3}\right ] \\ \left [R &= y \,{\mathrm e}^{-\frac {t}{3}}, S \left (R \right ) &= t\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 &=\frac {{\mathrm e}^{-3 t}}{y^{2}} \\ \frac {dS}{dR} &= {\mathrm e}^{4 R} \\ \end{align*}