How to set my wave to 0 when >1 and <-1

I'm trying to generate a half cosine wave where

y(t) = {sqrt(2)*cos(pi/2 *t); |t|<= 1
         0; |t| > 1}

I have my cosine wave working between -1 and 1 which is what I want, but then when it goes outside of that frame, I want it to be set to 0. I tried to use an if/elseif statement, but I'm not sure that it is doing what I want it to.

fs = 500;  %sampling freq

t = -2:1/fs:2;
if t>1
  x = 0;
elseif t<1
  x = 0;
else 
  x = sqrt(2)*cos(pi/2*t);
end        

figure(2)
plot(t,x);
axis([-2 2 -0.5 2]);
title('Half-cosine Pulse');
xlabel('Time(sec)');
ylabel('y(t)');

Answer 1

[Matt J]

x = sqrt(2)*cos(pi/2*t);

x( abs(t)>1 ) =0 ;