use matlab do at least last five

iii. create a matrix N where the rows of it are the variables a and b, respectively. iv. add variable cas the fourth row in matrix N. V. change the values of the third row in matrix N to be 1-1 - 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