y''=3-4cosx+x^5-2x решите уравнение

integral ((3-2 x+x^5-4 cos(x)) dx) = 1/6 x (x^5-6 x+18)-4 sin(x)+С

integral ( (c+1/6 x (18-6 x+x^5)-4 sin(x)) dx ) = 1/42 x (42 c+x (x^5-14 x+63))+4 cos(x)+constant

y= 1/42 x (42 c+x (x^5-14 x+63))+4 cos(x)+C, C=const