mtx_d(A,D,d)

Making given matrix altered to have a certain constant for its determinant

Given a non-singular matrix A, an arbitrary matrix D and a spesfic constant d, applying the following routine
[M,s] = mtx_d(A,D,d)
to find a scaler s and the resulted matrix M, such that
M = A + D*s and det(M) = d.
The constant d may be real or complex. Specially, if d = 0, then M is a singular matrix.