Introduction to MATLAB Quiz

Create two variables, X as a 5-by-5 identity matrix and Y as a 2-by-3 matrix of random values. Use the whos command to display information about the variables in the workspace.

Using the variables X and Y from Question 1, save them to a file named workspaceData.mat, then clear all variables from the workspace.

Reload the variables X and Y into the workspace from the workspaceData.mat file created in Question 2.

Define variables p = 10 and q = 4, then compute their product, product_pq, without displaying the result in the Command Window. Use the arrow key to recall the command for defining q, change its value to 6, and compute the new product.

Create a 3-by-3 matrix A with the following values: Then, add 5 to each element of A and display the result.

Transpose the matrix A from Question 1. Then, calculate the element-wise square of each element in the transposed matrix.

Concatenate the matrix A horizontally with itself to create a new matrix B that has double the columns of A. Then, concatenate A vertically with itself to create a matrix C that has double the rows of A.

Create a string variable greeting with the text "Hello, MATLAB". Then, add the phrase " - Welcome to text handling!" to the end of greeting using the + operator, and display the result.

Create a 2x2 string array B with the following values: Use the strlength function to determine the length of each string in B, and display the result.

Define a character array dna_seq1 with the value 'AGCTTAGC'. Concatenate dna_seq1 with another character sequence 'CGTACG' to create a new sequence dna_seq2, and display the combined sequence.