[求助]matlab中,向量怎样作为参数传递

piranha

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例如:x=[6 8 6 9];
用sin(x)可以得到1*4的向量,而factorial(x)则提示出错.遇到这样的情况非要用循环吗?请各位指点.

ylgdiy

a =
     1     2     3
>> factorial(a)
??? Error using ==> factorial
N must be a positive integer.

And we have:
factorial(n) is the product of all the integers from 1 to n, i.e. prod(1:n). Since double pricision numbers only have about 15 digits, the answer is only accurate for n <= 21. For larger n, the answer will have the right magnitute, and is accurate for the first 15 digits.