a)
function fn = fibonacci(n)
if n == 1 || n == 2
fn = 1;
else
fn = fibonacci (n-2)+fibonacci (n-1);
end
b)
function fibStore(n,filename)
fib = fibonacci(n);
save(filename);
end
function fn = fibonacci(n)
fn = ones(1,n);
if n > 2
a = fibonacci(n-1);
fn(1:n-1) = a;
fn(n) = a(end-1) + a(end);
end
end
c)
function ret = fact(n)
if n > 2
ret = n*fact(n-1);
else
ret = 2;
end
end
d)