List the last three elements of vector H (for example H = 2:5:70) using a Matlab

Question

List the last three elements of vector H (for example H = 2:5:70) using a Matlab command and store them inside H2. H can be any vector. H2 = H(last(3)) >> H2= H(end-3: end) H2= H(end-2: end) H2 = H(1: 3) How to do create a column vector K which is the third column of this matrix M=[l:3; 5:7; 10:12]: >> K = M (:, 3) >> K = M(1:3, 3) >> K = M ([1, 2, 3], 3) The first three answers are all correct. >> K = M (3, :) To display the text "I love Matlab!", one may enter: disp(I love Matlab!) display(I love Matlab!) display(" I love Matlab!") disp("I love Matlab!") To obtain the value of a parameter or a string from the user, what would be the appropriate command to use? fprintf input dips format

Explanation / Answer

Question-9

Correct option :   H2=H(end-2:end)

Explanation: H(end-2:end) access the range of elements from the index end-2 to end I,e H(end-2), H(end-1) and H(end).

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Question-10

Correct option: The first three answers are correct

Explanation:

K=M(:,3) : creates a column vector with data in 3 rd column of entire rows of M I,e 3,7,12

K=M(1:3,3) : creates a column vector with data in 3 rd column of 1st row to 3rd row of M I,e 3,7,12

K=M(1:3,3) : creates a column vector with data in 3 rd column of 1st row,2nd row, and 3rd row of M I,e 3,7,12

All above 3 answers is correct

K=M(3,:) : create a row vector with 3rd row of M   : not a correct option

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Question-11

Correct option         : disp(‘ I love Matlab!’)

Explanation : disp (‘String expression’)   and display(‘string expression’)   are the methods to print the string, A string is always enclosed with a pair of single quotes.

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Question-12

Correct option :   input

Explanation: fprintf is a formatted output function.   Disp is the output function. Format changes the input/output format.

Input is the function that accepts input from user

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