The following exercises are meant to be answered by few lines of MATLAB code; mo

Question

The following exercises are meant to be answered by few lines of MATLAB code; most of them could be expressed in a single line of code or command. The command may be involved (i.e., it may use a number of parentheses or calls to functions) but can, in essence, be solved by the execution of a single command. If the problem is too complicated, feel free to break it up over two or more lines and later to collapse it into a single line.

1. Given x = [3 1 5 7 9 2 6], explain what the following commands "mean" by summarizing the net result of the command.

a. x(3)

b. x(1:7)

c. x(1:end)

d. x(1:end-1)

e. x(6:-2:1)

f. x([1 6 2 1 1])

g. sum(x)

Explanation / Answer

a) x(3)= 5 // third element of the vector values.

b) x(1:7)= 3 1 5 7 9 2 6 // displays the first 7 elements from the vector.

c) x(1:end) =  3 1 5 7 9 2 6 // displays all the elements from the vector.

d) x(1:end-1) = 3 1 5 7 9 2 // displays all the elements except the last 1 from the vector.

e) x(6:-2:1) = 2 7 1 // starts from the 6th element and displays the value reduced by 2 from the vector position.

f) x([1 6 2 1 1]) = 3 2 1 3 3 // displays the value present in x according to the mentioned vector position i.e. 1 position in x is 3, 6 position is 2 and so on.

g) sum(x) = 33 // addition of all the values.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.