HW3P2 (20 points) In MATLAB Script file HW3P2.m, using format short g, do the following: Create the following three row vectors and do not display to the Command Window: a = [5 8 − 1 0 2 − 4] ; b = [4 1 9 − 2 3 − 5] ; and c = [−3 5 0 6 1 − 7]; then using only one command, do each of the following: i. create a nine-element row vector, D, consisting of the first three elements of each of the vectors a, b, and c, respectively, i.e., [5 8 − 1 4 1 9 − 3 5 0]. ii. create a nine-element column vector, E, consisting from the last three elements of the vectors a, b, and c, respectively. Hint: You can use the end keyword. iii. create a matrix N where the rows of it are the variables a and b, respectively. iv. add variable c as the fourth row in matrix N. v. change the values of the third row in matrix N to be [−1 − 2 − 3 − 4 − 5 − 6]. Use the colon operator to create this row. vi. delete the third column of matrix N. vii. using the appropriate built-in MATLAB function, determine the dimensions of matrix N and assign the output to a variable name S_N. viii. determine the number of rows and the number of columns of N and assign them to variables Nr and Nc, respectively. ix. create a six-element row vector, Ua, that contains the first three elements of the first row of N followed by the last three elements of the third row of N. x. create a six-element column vector, Uc, that contains elements 2, 4, and 5 of the second row of N, followed by elements 1, 2 and 3 of the fourth column of N.

Answer :

Answer:

a = [5 8 -1 0 2 -4];

b = [4 1 9 -2 3 -5];

c = [-3 5 0 6 1 -7];

%Part i

%Creating vector D with only one command

D = [a(1:3) b(1:3) c(1:3)]

%Part ii

%Creating vector E with the last elements of a, b, and c

E = [a(4:end) b(4:end) c(4:end)]

%Part iii

%Creating matrix N with a and b as the rows

N = [a;b]

%Part iv

%Adding the variable c as the third row of matrix N

N = [N;c]

%Part v

%Creating the third row of N from -1 to -6

N(3,:) = -1:-1:-6

%Part vi

%Deleting the third column of N

N(:,3) = ''

%Part vii

%Dimensions of matrix N

S_N = size(N)

%Part viii

%Rows and columns of matrix N

Nr = S_N(1)

NC = S_N(2)

%Part ix

Ua = [N(1,1:3) N(3,3:end)]

%Part x

Uc = [N(2,2:2:end) N(2,end) N(1:3,4)']

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