Homework help.(User defined functions )

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Can anyone help me figure out this homework.
function [add,sub] = Add_Subtract (M1,M2)
add = M1 + M2 ;
sub = M1 - M2 ;
end
This is what's requierd in the homework (Write a MATLAB User defined function code to calculate both the subtraction and addition of 2 matrices (it should check the dimensions of both matrices and return dimensions error if the dimensions does not match)
I know how to write the function and this is what I've done so far
But what i can't understand is how to make the function check the dimensions of both matrices and return dimensions error if the dimensions do not match

Accepted Answer

James Tursa
James Tursa on 2 Apr 2020
Hint: See these functions:
doc size
doc isequal
doc error
  1 Comment
Ahmad Farghaly
Ahmad Farghaly on 2 Apr 2020
Edited: Ahmad Farghaly on 2 Apr 2020
can you please show me how to use them sorry this is my first week learning matlab and i don't know a whole lot yet

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