%0 Journal Article %A I. I. Sharapudinov %T An approximate solution of the Cauchy problem for an ODE system by means of system $1,\, x,\, \{\frac{\sqrt{2}}{\pi n}\sin(\pi nx)\}_{n=1}^\infty$ %J Daghestan Electronic Mathematical Reports %D 2018 %P 33-51 %V 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DEMR_2018_9_a4/ %G ru %F DEMR_2018_9_a4