Multiple inputs/outputs of a function

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?

Answer 1

[ANKUR KUMAR]

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

[Kyle Langford]

Awesome, thank you! I like how the first one turned out. I was getting really frustrated trying to get the code smoothed out.