HomeWork 1 Complete Solution

Question: #8572

Home Work 1.1
1. Write the command that will create matrix A shown in the format below using colon operator for the first row,
𝐴=[0123456700789012] 𝑖𝑓 𝐾−𝐼𝐷=𝐾00789012
2. Now write the command that will access and extract ‘4’ from first row of ‘A’ and save it in ‘B’
3. Write the command that will add ‘B’ with element at location (2,4) of ‘A’ and save the result in ‘C’
4. Extract the row containing your K-Id and save into a new variable called ‘kid’
5. What are the dimensions of ‘kid’?

Hints for HW1.1:
Use ‘:’ operator to create the first row of A then switch to the next row using ‘;’ and then define the numbers of your K-ID separating them using comma ‘,’ or spaces eg. A=[m:n;1 2]
Find the row and column number in which ‘4’ is location in A, then form the index pair to address that location eg. A(m,n) is the element in A on the mth row and nth column
Add number at location (2,4) of A to B eg. A(m,n)+B
Access all elements only in the 2nd row and extract them to ‘kid’ eg. A(1,:) will access 1st row
Write down the dimension of ‘kid’ eg. m x n which means m rows by n columns

Home Work 1.2
1. Specify size/dimension of the matrix ‘A’ created in HW1.1. Also write the command that will find the size in MATLAB
2. Create an ‘ones’ matrix of the same size as ‘A’ and add it to ‘A’. Save the result into ‘D’
3. Now transpose ‘D’ and save it onto ‘E’. What is the size of matrix ‘E’?
4. Get a number from the user, save it in ‘f’ and subtract 10 from it. Save the result onto ‘f’
5. Use the three basic display and printing statements to print the new value of ‘f’ consisting of following four phrases
“The value entered by the user was”
Value of f
“. It was modified to”

Final value of f
Hints for HW1.2:
Mention dimensions of matrix ‘A’ and verify it using MATLAB eg. [m n]=size(A)
Create an ones matrix using ones(m,n) and add it to ‘A’
Use “ ‘ “ operator to transpose and find its size
Use input() to get number from user
Perform specified operation and use disp(), fprintf and sprint() to display the same statement

Solution: #8598

HomeWork 1 Complete Solution

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