# "matlab matrix indexing" Code Answer's

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### matlab matrix index

By SkelliBoi on Mar 30, 2020
``````A = [16 5 9; 4 2 11; 7 14 9]; % Create matrix

A(2,3)   % Extract the element in row 2, column 3
ans = 11

A(1:2,2:3) % Extract elements in rows 1 and 2, and columns 2 and 3
ans = 	5	9
2	11``````

Source: nl.mathworks.com

4

### matlab matrix indexing

By Comfortable Chimpanzee on Jul 10, 2020
``````v = [16 5 9 4 2 11 7 14];
v(3)     % Extract the third element  (ans = 9)``````

0

### matlab array indexing

By Armandres on Nov 21, 2020
``````Indicating indexes between ([]) retrieves corresponding values in Matlab.
array_borders=array([1 end])
As end defines size of the array, retrieve first and last border values of array
even_values=array(2:2:end)
Retrieve only second elements of array, from secon with 2 step iteration
increase until end of array.
first_3_values=array(1:3)
Retrieve only first 3 elements of array.``````