81 4 3 -4 4 6 6 -6 -8 -3 A =| 9 В C = [-8 7 9] D = -6 9 4 -7 -1 3] I-2 -8 7 -81 The following matrix operations are shown in MATLAB. Perform the same operation by hand and show your work for just the single element shown in green. For example, if asked x=D*B %x (1,1) write: x(1,1)=(d11)(b11)+(d12)(b21)+(d13)(b31) =0 + 18 + 24 + -4 = 38 (1) е-с*А-10 %e (1,1) (3) g=D.*D %g (4,2) (2) f=D^2 %f (4,2) (4) h=D(2:3,:) *B %h (2,2)

Computer Networking: A Top-Down Approach (7th Edition)
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Chapter1: Computer Networks And The Internet
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Question

(4) from the photo please

81
4
3
-4
4
6
-6 -8 -3
A =| 9
В
C = [-8 7 9] D =
-6 9
-1 3]
5
4
-7
9.
-2 -8
7
-81
The following matrix operations are shown in MATLAB. Perform the same operation by hand and show your
work for just the single element shown in green.
For example, if asked x=D*B %x(1,1) write:
x(1,1)=(d11)(b11)+(d12)(b21)+(d13)(b31) =0 + 18 + 24 + -4 = 38
%3D
(1) е-с*А-10
%e (1,1)
(3) g=D. *D
%g (4,2)
(2) f=D^2
%f(4,2)
(4) h=D (2:3,:)*B
%h (2,2)
Transcribed Image Text:81 4 3 -4 4 6 -6 -8 -3 A =| 9 В C = [-8 7 9] D = -6 9 -1 3] 5 4 -7 9. -2 -8 7 -81 The following matrix operations are shown in MATLAB. Perform the same operation by hand and show your work for just the single element shown in green. For example, if asked x=D*B %x(1,1) write: x(1,1)=(d11)(b11)+(d12)(b21)+(d13)(b31) =0 + 18 + 24 + -4 = 38 %3D (1) е-с*А-10 %e (1,1) (3) g=D. *D %g (4,2) (2) f=D^2 %f(4,2) (4) h=D (2:3,:)*B %h (2,2)
Expert Solution
Step 1

Since you are asked only for question 4, I am solving only question 4.

4.

Given

h=D(2:3,:)*B

D(2:3,:) gives 2nd and 3rd rows of the matrix D

i.e [5 -6 -8 -3;5 4 -7 9]

Given B=[0 8;6 6;-6 9;-1 3]

 

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