Question 3: 18 marks & Write a Matlab/Octave command to produce a row vector, xx, which starts from 2 and finishes at 20. The step size is given as 1.5. (Note: You are not allowed to type all elements of the vector) b. Given row vectors B=(2,4,8,10 and C=11,3,5,7). Write a Matlab/Octave command to multiply B and C. Store the results in vector A. c. K is a 3 by 4 matrix. Write a Matlab/Octave command to determine the average value of all elements in the second column of matrix K. Store the result in a variable known as AVG d. Mis a 3 by 2 matrix. Write a Matlab/Octave command to determine the sum of all elements in row I and row 3 of matrix M. Store the result in a variable known as Total. Question 4: 17 marks The table below gives the average speed and distance travelled by three motorcycles Motoreyele 1 2 3 60 50 80 Average speed, u (km/h) Distance travelled, s (km) 120 125 100 Write Matlab/Octave codes to: a assign the values to the vectors u ands b. determine and display: i the time of travel, t for each of the three motorcycles ii. the longest average time of travel and the motorcycle iii the shortest average time of travel and the motorcycle