Why am i recieving a "parse" error?

I am trying to write a very simple function file to use in my more complicated script file. The file I have is this:

>function y(x)=trigC(x)

>>>y(x)=(cos(5*x))

>end

When I do this, the error within the function says "Parse error at '=': usage might be invalid MATLAB synax" referring to the y(x)=trigC(x). And when I run the program it says "The expression to the left of the equals sign is not a valid target for an assignment."

I am not familiar enough with MATLAB syntax to figure out what it even means, let alone how to fix it. Any ideas? Thank you!

Answer 1

[Roger Stafford]

You can't write your function that way. Write it this way:

   function y = trigC(x)
    y = cos(5*x);
   end

Because of the nature of the 'cos' function, if x is a vector of values, then y will return as a similar size vector of the cosine of five times the corresponding values in x. A similar statement holds if x is a scalar or an n-dimensional array.

[Erin Cooper]

That worked! Thank you

Answer 2

[Ankita Pawar]

i am trying to write this function but parse error occure near '=' this .

please tell me what is the wrong in it.

machine1

en:

switch = 1;

stack_m = 1;

stack_l = 1;

sensor_m1 = 1;

sensor_m2 = 1;

sensor_l1 = 1;

sensor_l2 = 1;

exit:

m = 1;