用matlab求1!+2!+...+50!

以下是用Matlab求1!+2!+...+50!的方法：

function x = sumNum(i)
sumNum(1) = 1;
for i = 2:50
    p = 1;
    for k = 1:i
        p = p * k;
    end
    sumNum(i) = sumNum(i-1) + p;
end
x = sumNum(50);

调用该函数即可得到结果：

>> sumNum(50)
ans =
   3.041409320171337e+64