A single factorial experiment was conducted to develop a method of ripening and softening fresh berries of pepper (Pipper nigrum Linnaeus) by using Ethephon.
采用单因子试法,步研究了用乙烯软化胡椒鲜果的方法。
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And if you think, this is 2 factorial.
如果你,是 2 。
This is 4 factorial, 6 minus 2 is 4 factorial.
是4,62是4。
If this was 7 over 7 minus 2 factorial we would have 7 times 6.
如果是 7 除 7 2 ,我将有 7 以 6。
Instead of factorial time, it takes linear time.
它不是时间, 而是线性时间。
So k factorial could be written as k times k minus 1 factorial.
所以 k 可以写成 k 以 k 1 。
So 6 factorial divided by 6 factorial, those cancel out.
所以 6 除以 6 ,那些抵消了。
Once again, you'll have to know that 0 factorial is equal to 1.
再一次,你必须知道 0 的等于 1。
So this could be rewritten as k times k minus 1 factorial.
所以可以改写 k k 1 。
And here we can make a little bit of a simplification because what's k divided by k factorial?
在里我可以稍微简化一下,因 k 除以 k 的是多少?
So we could rewrite n factorial using the same trick up here.
所以我可以在里使用相同的技巧重写 n 。
It approximates factorials with essentially a continuous function.
它近似于具有连续函数的。
So 0 factorial divided by 10 minus 0 factorial.
所以 0 除以 10 去 0 。
But 0 factorial is actually-- so that it works out properly is defined to be equal to 1.
但是 0 实际上是——所以它正确地计算出来被定义等于 1。
That's all this factorial stuff here.
就是所有些的东西。
Times n minus k factorial times p to the k times 1 minus p to the n minus k.
以 n k p 到 k 以 1 p 到 n k。
So 10 factorial, that's kind of the number of trials I have.
所以 10 ,就是我的试验次数。
So we'll take the factorial of 6 and we'll divide it by-- put a parentheses here.
所以我将取 6 的,然后将它除以 -- 在里放一个括号。
If this had 3 we would do 3 factorial, and I'll show you how that can happen.
如果它有 3,我会做 3 个,我会告诉你是如何发生的。
5 factorial is 5 times 4 times 3 times 2 times 1.
5是5以4以3以2以1。
And actually, it turns out that it's 2 factorial.
实际上,它是 2 的。
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