How can I fix random numbers in a for loop?

Hello everyone. I am trying to write a code that does something like this:

for k=1:10
    j=0
    for t=1:.1:10
        j=j+1;
        s1(j)=randi([1,5],1,1)*sin(1*t)+randi([1,5],1,1)*sin(2*t);
        s2(j)=randi([1,5],1,1)*sin(1*t)+randi([1,5],1,1)*sin(2*t);
    end
    diff(k)=(s1-s2);
end
avgdiff=mean(diff)

but I want to fix the random integer for the entire loop of k. So each time, 1-10, that k is looped, a new random coefficient is generated for each polynomial. As it stands now, it seems like a new random coefficient is generated for each loop of t. I would prefer if it would be generated for each loop of k, such that, for example

diff(1)=[(3*sin(1*t)+2*sin(2*t))-(4*sin(1*t)+2*sin(2*t))]
diff(2)=[(1*sin(1*t)+3*sin(2*t))-(5*sin(1*t)+4*sin(2*t))]

I hope that makes sense. I am still trying to learn, so any feedback is appreciated. Thank you in advance!

Answer 1

[David Hill]

t=1:.1:10;
for k=1:10
 s1=randi(5)*sin(1*t)+randi(5)*sin(2*t);
 s2=randi(5)*sin(1*t)+randi(5)*sin(2*t);
 Diff(k)=(s1-s2);
end
avgdiff=mean(Diff);

[Andrew Burley]

Thanks!