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A strange result with vectors

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metin yilmaz
metin yilmaz on 5 Nov 2020
Answered: Rishik Ramena on 5 Nov 2020
When I create 1:3:5 matlab turns 1 4, a row matrix.
why does matlab ignores .* between two vectors?
1:3:5 .* 1:3:5 turns out that 1 4.
But when I write 1:3:5 1:3:5 matlab turns "unexpected matlab expression".
Thank you.

Answers (1)

Rishik Ramena
Rishik Ramena on 5 Nov 2020
The precedence of .* operator is higher than : operator. You can find more about operator precedence in MATLAB here. So you can get the desired output by using parentheses as shown (1:3:5).*(1:3:5).
1:3:5.*1:3:5 is interpreted as:
1:(3:(5.*1):3):5 -> 1:(3:5:3):5 -> 1:3:5 -> [1,4]
Also note that the .* operator is not being ignored.

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