% x is a vector where x(i) = 10^(-i)
format long e
x = zeros(1,8);
for i = 1:8
    x(i) = 1/2+10^(-i);
end

a = zeros(1,8);
for j = 1:8
    a(i) = fsin(x(i))-sin(x(i));
end

b = zeros(1,8);
for j = 1:8
    b(i) = fcos(x(i))-cos(x(i));
end
a
b