note数式テスト

noteの数式はtex記法によるもの
$${}$$

$${y = ax + b}$$

$${y = ax^2 + bx + c}$$

$$
y= \frac{1}{2}
$$

$$
x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
$$

文章$${y = 2x}$$文章

$${(a + b)^n = \sum_ {k=0}^{n} {}_n C_k a^{n-k} b^k}$$

    $${a × b}$$
$${=ab}$$

$${{}_n C_r}$$

$${lim_{\Delta x \to \ 0}}$$

$${\Delta x}$$

$${\infty \in }$$

$${a_{n}}$$

$${\prod_{k=1}^{n}}$$

$${ROE＝\frac{Net Income}{Revenue}\times\frac{Revenue}{Total Asset}\times\frac{TotalAsset}{Total Equity}}$$

$${\pi \tau \sigma \delta \Delta}$$

$${\int_{0}^{\infty}f(\theta)d \theta}$$

$${\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} (r \cos \theta) d \theta}$$

$${\left[ f(x) \right]_{-\frac{\pi}{2}}^{\frac{\pi}{2}}}$$

$${\sqrt{r^2 - (r \sin \theta)^2}}$$

$${\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \sqrt{r^2 - (r \sin \theta)^2} (r \cos \theta) d \theta}$$