[_Abel]
Book solution method
Abel ODE, First kind
Mathematica ✓
cpu = 0.876621 (sec), leaf count = 73
Maple ✓
cpu = 0.062 (sec), leaf count = 50
DSolve[y'[x] == y[x]^2*(a*E^x + y[x]),y[x],x]
Mathematica raw output
Solve[(-I)*a*E^x == 2/(E^((1 + a*E^x*y[x])^2/(2*y[x]^2))*(2*C[1] - I*Sqrt[2*Pi]*
Erf[(1 + a*E^x*y[x])/(Sqrt[2]*y[x])])), y[x]]
Maple raw input
dsolve(diff(y(x),x) = (a*exp(x)+y(x))*y(x)^2, y(x),'implicit')
Maple raw output
_C1+exp(-1/2*(a*exp(x)+1/y(x))^2)/a/exp(x)+1/2*erf(1/2*(a*exp(x)+1/y(x))*2^(1/2)
)*2^(1/2)*Pi^(1/2) = 0