a) Write the code that obtains this matrix in MATLAB environment. (In this question, it is mandatory to use the commands zeros, ones and eye. It would be beneficial to examine the matrix according to its patterns and code it.)

b)Write the MATLAB code that assigns the part of the X matrix shown in the red rectangle to the "vector B".

5 0 0 0 1 1 1 1 0 5 0 0 1 1 1 1 o o 5 0 1 1 1 1 0 0 0 5 1 1 1 1 3 o o o o 2 2 2 2 0 3 o 2 2 2 2 0 0 3 o 2 2 2 2 0 0 0 3 2 2 2 2 DDDDDDDD 0000000 00000000 DDD DDDDDD DODDDDDD DDDDDDDD DDDDDDDD DDDDDDD