a=1:100;b=mod(a,3);

%對3求餘sum=0;for

i=1:100

if(b(i)==0)

%

餘數為0的說明整除，將其加起來

sum=sum+a(i);

endendsum

1

su=0;

for i=1:100

if mod(i,5)==0 su=su+i;

end

end

fprintf("所求和為:%d",su);

2

a=1;b=10;

disp("x(1)=1 \n x(2)=10");

for i=3:10

t=b;

b=(a+b)/2;

a=t;

fprintf("x(%d)=%1.4d\n",i,b);

end

3

function aver=average(a)

aver=sum(a)/length(a)

end