### Santos Solpos (view profile)

on 19 Nov 2019 at 9:40
Latest activity Commented on by Walter Roberson

### Walter Roberson (view profile)

on 21 Nov 2019 at 9:00

### Santos Solpos (view profile)

You need to solve and give the correct matlab expression and result
A= C= E=
1 2 3 4 16 2 3 13 1 0 0 0
6 8 1 5 5 11 10 8 0 1 0 0
9 4 2 7 9 7 6 12 0 0 0 1
9 4 7 2 4 14 15 1 1 0 0 0
B= D= F=
1 1 1 1 1 0 0 0 3 6 9 12
1 1 1 1 0 3 0 0 18 24 3 15
1 1 1 1 0 0 5 0 27 12 6 21
1 1 1 1 0 0 0 7 27 12 21 6
Question
1. Create this matrix from the given matrices in Part V. (Use matrix shortcuts). Write the Matlab expression and Result.
T=
1 2 3 4 2 2 2 2 4 3 3 3
6 8 1 5 2 2 2 2 3 4 3 3
9 4 2 7 2 2 2 2 3 3 3 4
9 4 7 2 2 2 2 2 4 3 3 3
1 4 7 10 16 2 3 13 1 0 0 0
16 22 1 13 5 11 10 8 0 3 0 0
25 10 4 19 9 7 6 12 0 0 5 0
25 10 19 4 4 14 15 1 0 0 0 7

Santos Solpos

### Santos Solpos (view profile)

on 19 Nov 2019 at 11:51
No idea
Santos Solpos

### Santos Solpos (view profile)

on 19 Nov 2019 at 11:52
Can you give me a hint
Walter Roberson

### Walter Roberson (view profile)

on 20 Nov 2019 at 0:08
Look at the top right corner of T, the part starting from 1 2 3 4 . Look at that 4 x 4 block. Now look at your variables. Do you see that same 4 x 4 block in any of your variables?

### Santos Solpos (view profile)

on 21 Nov 2019 at 8:31

Hello Sir David Hill
Can you check my answers? I attached pdf of my answers to matlab problems. I am hoping that you will give a comment.

Walter Roberson

### Walter Roberson (view profile)

on 21 Nov 2019 at 9:00
The division questions are ambiguous B/2C can be interpreted as B/2*C or as B/(2*C) depending on the context and the font.
AB can be either matrix multiplication * or element-by-element multiplication .* which are different operators.
B/C can be either matrix division / or element-by-element division ./

### David Hill (view profile)

on 19 Nov 2019 at 12:05

Hint
T=[A,2*B,3*B+E;F-2*B,C,D];

Steven Lord

### Steven Lord (view profile)

on 19 Nov 2019 at 15:17
If a problem sounds like a homework assignment (which this absolutely does), please don't simply provide the answer! [The more work the student shows the more generous I would be with hints; if they'd posted what you did except wrote F+2*B instead of F-2*B I'd just go ahead and fix it for them.]
A hint would have been a pointer to some of the introductory documentation, like the Matrices and Arrays section of the Getting Started with MATLAB chapter.

### Santos Solpos (view profile)

on 21 Nov 2019 at 1:17

Hello David Hill
I tried using blkdiag. Is it correct?

David Hill

### David Hill (view profile)

on 21 Nov 2019 at 2:44