2.1066   ODE No. 1066

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

$$y^{″}(x)+\tan (x)y^{\prime }(x)+y(x){\cos }^2(x)=0$$ ✓ Mathematica : cpu = 0.0384925 (sec), leaf count = 18

$$\left\{\{y(x)\to c_2\sin (\sin (x))+c_1\cos (\sin (x))\}\right\}$$

✓ Maple : cpu = 0.12 (sec), leaf count = 15

$$\{y\left(x\right)=\mathit{\_}\mathit{C}\mathit{1}\sin (\sin \left(x\right))+\mathit{\_}\mathit{C}\mathit{2}\cos (\sin \left(x\right))\}$$