RSD

This operation calculates the residual of its inputs which is:

Array₁ - Array₂ × Array₃

If Array₃ is an approximation to a solution of Array₂ × X = Array₁, then this provides a correction to improve that solution.

There are many requirements for the input values:

• Array₁ and Array₃ must either both be vectors or both be matrices.
• If Array₁ and Array₃ are both matrices, they must have the same number of columns.
• If Array₁ is a matrix, then Array₁ must have the same number of rows as in Array₂.
• If Array₁ is a vector, then the number of values in Array₁ must be the same as the number of rows in Array₂.
• Array₂ must be a matrix.
• If Array₃ is a matrix, then the number of rows of Array₃ must be the same as the number of columns of Array₂.
• If Array₃ is a vector, then the number of values of Array₃ must be the same as the number of columns of Array₂.