"Undefined function or variable 'x'." for input of function

im extremely new on matlab, tried to write a code like this. my issue is when i try to see the 'y' i see "Undefined function or variable 'x'." for input of function". here is the code of mine. i can see the x but when i press for y i cant see it.

function [z]= trial(x,y)
x=1:1:7
y=x+3;
z=x.*y;
end

Answer 1

[Birdman]

Give x and y as input argument from outside as follows:

x=1:7;
y=x+3;

Then call the function from command line, do not press the green Run button the run the function:

z= trial(x,y)

Also, this tutorial should help:

Function Basics

[eren baris alici]

did not work. i press enter after z= trial(x,y) and take same error. when press just trial i can see every variables value.

[Birdman]

Have you saved your function like this?

function [z]= trial(x,y)
z=x.*y;
end

After doing this, call from command as follows:

 x=1:7;
 y=x+3;
 z= trial(x,y)