Error using * Inner matrix dimensions must agree.

Hello everyone. Could someone explain why this error is occuring here and correct my code.

I have no idea why dimension problem came out here. I would aprreciate for any conclunsions about it

clc;
clear all;
                    
x1=0:0.001:1;
x2=1:0.001:10;
y=16;
 
a=input('Których chcesz obrać przypadek E<Vo (1) czy E>Vo (2)    ');
if a==1;
disp('Wybrano zalozenie E<Vo');
 
f=1/(1+((1/(4*x1*(1-x1)))*(sinh(sqrt(y*(1-x1)))^2)));

figure (1)
plot(f,x1);
grid on;
title('x1');

elseif a==2;
    disp('Wybrano zalozenie E>Vo');
g=1/(1+((1/(4*x2*(x2-1)))*(sin(sqrt(y*(x2-1)))^2)));

figure (2)
plot(g,x2);
grid on;
title('x2');
end

Command window:

Answer 1

[Adam]

Unless you meant matrix multiplication, in which case you likely need to transpose one side of the * then what you need is .* for element-wise multiplication.

See

doc times

Answer 2

[madhan ravi]

See

https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.htmlhttps://www.mathworks.com/help/matlab/matlab_prog/compatible-array-sizes-for-basic-operations.html

x1=linspace(0,1,1000);
x2=linspace(0,10,1000);

Put dots infront * , ^ and /

[Stephen23]

Read this to know the difference:

https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html

[madhan ravi]

Thank you Stephen

Answer 3

[Krystian Leszkowicz]

Key to unslove this problem was to add "." before each mathemtical sign ( .*, ./).

Thank u guys a lot.