Many important problems in physics and other sciences can be formulate
d in terms of the inverse problem of type n(y) = integral K(y/x)g(x) d
x, where g(x) is unknown. We show that this problem can be completely
solved for a quite general class of kernel K(y/x) by analytically dila
ting n(y) and K(y/x) to the complex z plane, and by the analysis of th
e singularity of the dilated kernel K(z/x). The formalism is also exte
nded to multi-dimensional cases.