Getting Error: Undefined function 'colspace' for input arguments of type 'double'.
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Question: Find column space of row reduced echelon form of the matrix A = magic(6).
My Matlab Code:
>> A = [2 -1 0 0 0; -1 2 -1 0 0; 0 -1 -2 -1 0; 0 0 -1 2 -1; 0 0 0 -1 2]
A =
2 -1 0 0 0
-1 2 -1 0 0
0 -1 -2 -1 0
0 0 -1 2 -1
0 0 0 -1 2
>> R = rref(A)
R =
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1
>> C = colspace(R)
Undefined function 'colspace' for input arguments of type 'double'.
Problem: I am getting the aforementioned error: Undefined function 'colspace' for input arguments of type 'double'. when I try to find the column space for the matrix (R). Please can you find the problem and help me out? I am new to Matlab and I am learning this software. Thanks a lot! Appreciate it. :)
MATLAB Version: MATLAB R2013a
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