Multiple inputs/outputs of a function

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I have my function defined as:
function [x,y] = get_y(x)
if x<-1;
y=exp(x+1);
else
if (-1<x & x<5);
y=2+cos(pi*x);
else x>=5;
y=10*(x-5)+1;
end
end
end
when I individually run x=-2 or x=8, I get the correct answer.
When i run x=[-2,8], it only gives me answers based on the 3rd parameter. How do I get the correct output parameterized by the input?

Accepted Answer

ANKUR KUMAR
ANKUR KUMAR on 10 Mar 2021
Edited: ANKUR KUMAR on 10 Mar 2021
You can use the same function which you provided, and use loop while calling the function, or you can modify the function to give output as per your input.
IDEA 1: Using the same code which you provided:
Calling the function:
input_array=[-2,8];
for index=1:length(input_array)
[a(index),b(index)]=get_y(input_array(index));
end
a
b
Function:
function [x,y] = get_y(x)
if x<-1;
y=exp(x+1);
else
if (-1<x & x<5);
y=2+cos(pi*x);
else x>=5;
y=10*(x-5)+1;
end
end
end
IDEA 2: You can prefer to nodify the function itself.
Calling the function:
[xx,yy]=get_y_advance(input_array);
xx
yy
Function:
function [x_array,y_array] = get_y_advance(input_array)
for index=1:length(input_array)
x=input_array(index);
if x<-1;
y=exp(x+1);
else
if (-1<x & x<5);
y=2+cos(pi*x);
else x>=5;
y=10*(x-5)+1;
end
end
x_array(index)=x;
y_array(index)=y;
end
end
  1 Comment
Kyle Langford
Kyle Langford on 12 Mar 2021
Awesome, thank you! I like how the first one turned out. I was getting really frustrated trying to get the code smoothed out.

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