First, you would initialize variables, then you could structure a for or while loop using the desired looping conditions. In this example below, every time the code progresses through the loop, t is increased by 1, so this for loop will loop through 99 times. You have to decide whether a for loop or a while loop would better suit your purposes. For loops run for a specific number of times, and while loops run as long as some condition is true. You can read more about for/while loops here .
t=1;
x1=[];
x2=[];
y1=f(x1);
y2=f(x2);
d1=(t-x1);
d2=(t-x2);
while t< 100
answer=y1+y2*d1+y3*d1*d2
t=t+1;
end
