2.1411   ODE No. 1411

1. Problem in Latex
2. Mathematica input
3. Maple input

$$y^{″}(x)=\frac{y(x)}{e^x+1}$$ ✓ Mathematica : cpu = 0.336037 (sec), leaf count = 42

$$\left\{\{y(x)\to c_1(e^{-x}+1)+c_2{e}^{-x}(e^x\log (e^x+1)+\log (e^x+1)+1)\}\right\}$$

✓ Maple : cpu = 0.048 (sec), leaf count = 27

$$\{y\left(x\right)=(({({\mathrm{e}}^x+1)}^{-1}+\ln ({\mathrm{e}}^x+1))\mathit{\_}\mathit{C}\mathit{1}+\mathit{\_}\mathit{C}\mathit{2})(1+{\left({\mathrm{e}}^x\right)}^{-1})\}$$