A 2n-dimensional Lax integrable system is proposed by a set of specifi
c spectral problems. It contains Takasaki equations, the self-dual Yan
g-Mills equations and its integrable hierarchy as examples. An explici
t formulation of Darboux transformations is established for this Lax i
ntegrable system. The Vandermonde and generalized Cauchy determinant f
ormulas lead to a description for deriving explicit solutions and thus
some rational and analytic solutions are obtained.