Ymath テスト 新しいページはコチラ
提供: yonewiki
| 4行: | 4行: | ||
<ymath> | <ymath> | ||
\[ | \[ | ||
| − | \frac{\pi}{2} = | + | \frac{\pi}{2} = |
| − | \left( \int_{0}^{\infty} \frac{\sin x}{\sqrt{x}} dx \right)^2 = | + | \left( \int_{0}^{\infty} \frac{\sin x}{\sqrt{x}} dx \right)^2 = |
| − | \sum_{k=0}^{\infty} \frac{(2k)!}{2^{2k}(k!)^2} \frac{1}{2k+1} = | + | \sum_{k=0}^{\infty} \frac{(2k)!}{2^{2k}(k!)^2} \frac{1}{2k+1} = |
| − | \prod_{k=1}^{\infty} \frac{4k^2}{4k^2 - 1} | + | \prod_{k=1}^{\infty} \frac{4k^2}{4k^2 - 1} |
\] | \] | ||
</ymath> | </ymath> | ||
