1.
y=c1e2t+c2e−t−2t2+3t−72
2.
y=c1e3x+c2ex+cos(x)
3.
y=c1et+c2tet+cos(t)
4.
y=c1cos(√3t)+c2sin(√3t)+307 e2t
5.
y=e9t(c1cos(2√15t)+c2sin(2√15t))+332 e3t
6.
y=c1ex+c2+12 sin(x)+12 cos(x)
7.
y=c1e−t+c2e−2t+t22 −3t2 +74
8.
y=e−3x2 (c1cos(√11x2 )+c2sin(√11x2 ))+25 e−3x
9.
y=c1et+c2e−2t+9e2t
10.
y=c1e−2x+c2xe−2x+x2−4x+72