Sample UserEFI Functions

Mathcad comes with two sample UserEFI functions: the Kronecker product function, and the digamma function.

kronecker(M, N) Multiplies matrix N by each element of matrix M, returning an M·N by M·N array.

Arguments:

• M and N are square matrices.

Psi(z) Returns the derivative of the natural log of the Gamma (Γ) function.

Argument:

• z is a real number.

Note:

• The source code for these functions can be found in the userefi\microsft\sources\treasury\ directory of your Mathcad installation. For more information on compiling your own functions, consult the Developer's Reference.