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多重组合数格式修改
author
SingerCoder
<61050238+SingerCoder@users.noreply.github.com>
Thu, 5 Nov 2020 12:27:35 +0000
(20:27 +0800)
committer
GitHub
<noreply@github.com>
Thu, 5 Nov 2020 12:27:35 +0000
(20:27 +0800)
docs/math/combination.md
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diff --git
a/docs/math/combination.md
b/docs/math/combination.md
index
1e70470
..
912adde
100644
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--- a/
docs/math/combination.md
+++ b/
docs/math/combination.md
@@
-85,7
+85,7
@@
$$
(x_1 + x_2 + \cdots + x_t)^n = \sum_{满足 n_1 + \cdots + n_t=n 的非负整数解} \binom{n}{n_1n_2\cdots n_t} x_1^{n_1}x_2^{n_2}\cdots x_t^{n_t}
$$
-其中的 $\binom{n}{n_1
n_2\cdots
n_t}$ 是多项式系数,它的性质也很相似:
+其中的 $\binom{n}{n_1
,n_2,\cdots ,
n_t}$ 是多项式系数,它的性质也很相似:
$$
\sum{\binom{n}{n_1n_2\cdots n_t}} = t^n