Help with conditional statement

How do I program this on Matlab?

Answer 1

[Star Strider]

My approach to these problems is to take advantage of MATLAB’s logical vectors.

So for example, if I wanted to construct a function that was +1 for x-values between -1 and 0, and -1 for x-values between 1 and 2, I would do this —

f = @(x) 1.*((x>=-1) & (x<=0)) + (-1).*((x>=1) & (x<=2));  
x = linspace(-3, 3);

figure
plot(x, f(x))
grid
ylim([-1 1]*1.1)

You can also use an if block.