Question

Problem 5 Create the following matrix by typing elements explicitly one command. Do not type individual 0 00 0 0 o o 0 0 0 0 0 1 2 3 F=0 01 10 20 0 0 2 8 26 0 0 3 6 32 E 0 045 6 0 0 7 8 9 Problem 6 Create two row vectors: a -4 10 0.5 1.8 -2.3 7, b [0.7 9 -53-0.6 12 (a) Use the two vectors in a MATLAB command to create such that the first row consists of klements 2 through 5 of vector a, and the second row consists of elements 3 through 6 of vector b. (b) Use the two vectors in a MATLAB command to create a 3 x4 matrix such that the first column consists of elements 2 through 4 of vector a, the second column consists of elements 4 through 6 of vector a, the third col umn consists of elements through 3 of vector b, and the fourth column consists of elements 3 through 5 of vector b. a 2 x 4 matrix Problem 7: Create the following matrix B. 18 17 16 15 14 13 B 12 110 9 8 7 2 1 6 5 4 3 Use the matrix B to (a) Create a six-element column vector named va that contains the elements of the second and fifth columns of B. (b) Create a seven-element column vector named vb that contains elements 3 through 6 of the third row of B and the elements of the second column of B. (c) Create a nine-element column vector named vc that contains the ele ments of the second, fourth, and sixth columns of B

Answer 1

Single MATLAB command that creates matrix E without typing individual elements explicitly is,

E(2:4,3:5)=[1:3;4:6;7:9]

MATLAB output:

E =

0 0 0 0 0
0 0 1 2 3
0 0 4 5 6
0 0 7 8 9

Single MATLAB command that creates matrix F without typing individual elements explicitly is,

>> F(2:4,3:5)=[(1:3)',(10:-2:6)',(20:6:32)']

MATLAB output:

F =

0 0 0 0 0
0 0 1 10 20
0 0 2 8 26
0 0 3 6 32