Calculator supports Matrix and Range types and allows this methods on matrices: clone, concat, det, diag, eye, inv, ones, size, squeeze, transpose, zeros.
Examples: Functions:  matrix(a)  Create a matrix.
 clone(A)  Clone a variable. Creates a copy of primitive variables,and a deep copy of matrices
 concat(a,b,...[,dim])  Concatenate matrices. By default, the matrices are concatenated by the first dimension. The dimension on which to concatenate can be provided as last argument.
 det(A)  Calculate the determinant of a matrix
 diag(A)  Create a diagonal matrix or retrieve the diagonal of a matrix. When x is a vector, a matrix with the vector values on the diagonal will be returned. When x is a matrix, a vector with the diagonal values of the matrix is returned.When k is provided, the kth diagonal will be filled in or retrieved, if k is positive, the values are placed on the super diagonal. When k is negative, the values are placed on the sub diagonal.
 eye(m,n)  Returns the identity matrix with size mbyn. The matrix has ones on the diagonal and zeros elsewhere.
 inv(A)  Calculate the inverse of a matrix
 ones(n,m)  Create a matrix containing ones.
 range(n,m[,step]) or n:m  Create a range. Lower bound of the range is included, upper bound is excluded.
 size(A)  Calculate the size of a matrix.
 squeeze(A)  Remove singleton dimensions from a matrix.
 subset(A,index[,replacement])  Get or set a subset of a matrix or string. Indexes are onebased. Both the ranges lowerbound and upperbound are included.
 transpose(A) or A'  Transpose a matrix
 zeros(m,n)  Create a matrix containing zeros.
