Mathematical functions across variables

I have two variables saved in the workspace, A and B. Say A is 3x3 and B is 2x2. This seems so simple, but how would I add A(1,1) to B(2,1)? I can't seem to get anything to work. Thanks.

[Stephen23]

"This seems so simple, but how would I add A(1,1) to B(2,1)? I can't seem to get anything to work"

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

Answer 1

[John D'Errico]

Is there a good reason why you would not just try this?

A(1,1) + B(2,1)

I think you are coming from a spreadsheet world. And for some reason you think MATLAB needs to operate just like a spreadsheet. Honestly, I don't know what it is you would have tried to do that operation. But I will guess you were trying to click on those elements somehow, and get an addition.

Answer 2

[the cyclist]

If you just want to know their sum

A(1,1) + B(2,1)

If you want to add A(1,1) to the value stored in B(2,1)

B(2,1) = A(1,1) + B(2,1)

Given the level of your question, you would probably find the free MATLAB Onramp tutorial useful.