In Problems 21 24 the given vector functions are solutions to a system x t Ax t Determine whether they form a fundamental solution set If they do find a fundamental matrix for the system and give a general solution 21 x e 22 x e 23 x 3 2e 24 X e er X X 2 2 4 X 1 0 sint COS sint X e 1 2e 1 cost sin COST