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Finding a Number in a random array

Asked by Josiah Miles on 7 Oct 2019
Latest activity Edited by Kevin Phung on 7 Oct 2019
So I am given the code p1pA=magic(7).
How would I use Matlab to find the number in the fourth row and sixth column?
Also how would I find the twentieth number?

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2 Answers

Answer by Kevin Phung on 7 Oct 2019
Edited by Kevin Phung on 7 Oct 2019
 Accepted Answer

How would I use Matlab to find the number in the fourth row and sixth column?
p1pA=magic(7);
p1pA(4,6) %The syntax is p1Pa(row,column)
Also how would I find the twentieth number?
p1pA(20)
% if just 1 index provided, the indices go column by column.
%Ex :[1 4 7]
% [2 5 8]
% [3 6 9]

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Answer by Turlough Hughes on 7 Oct 2019

Have a look at the following documentation and scroll down to the part about indexing matrices with two subscripts. For your second question I believe you are looking for linear indexing which is the next section.

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