From math explanations to academic writing! You can now use "mathematical formulas" in your articles

You can now express mathematical formulas on note!

Not only for those who love mathematics,

• arithmetic and math explanations by teachers

• explanations of theories in economics, finance, and marketing

• writing academic papers

and other uses are now possible.

At note, we continue to add features to enable all kinds of expression, and this mathematical formula expression is one of them.

For example, you can explain mathematical formulas like this.
Maybe you'll even be able to teach math classes on note?

$${\frac{1}{2} + \frac{1}{3}}$$
$${= \frac{3}{6} + \frac{2}{6}}$$
$${= \frac{5}{6}}$$

You can preview how formulas will look on the input screen, and you can write formulas using a common method called "TeX notation," which is used by other services as well.

How to use formula notation

On note, you can use two types of formula notation: "inline formulas" and "display formulas." We have adopted TeX notation for expressing formulas.

1. Inline formulas

1. Enclose the part you want to make into a formula with $${}$$ (all half-width).

2. The part in between will be displayed as an inline formula.

[Display example]
“This is an inline formula. You can display formulas in the middle of a line like $${y = x^2}$$.”

[Input example]

Inline formulas can be used in the following places:
(They cannot be used in headings, code blocks, or quotes)

• Normal lines of text

• Link text

• Bold text

(2) Display math formulas

1. Enter "$$" (two half-width dollar signs) at the beginning and end of the paragraph you want to turn into a formula as shown below.

2. Enter the formula on the lines between them.

3. That paragraph will be displayed as a mathematical formula.

[Display example]

$$
y = (x + 1)^2 \\ = x^2 + 2x + 1
$$

[Input example]

About the preview feature

New editorWhen writing formulas using the , you can use the preview feature (although the formulas themselves can be displayed in the current editor, the preview while editing is not displayed, so please check using the draft function, etc.).

To use the preview, for both inline and display formulas, move the cursor between the start and end symbols (the part circled in red in the figure) to display the preview.

About available TeX notation

You can use the notation found at the URL below.

However, there are the following restrictions.

• From a security perspective, HTML features are disabled and cannot be used.

• Some environments (equation/align/gather/alignat/CD) cannot be used in inline formulas.

For more details, please see the help page.

Feedback referenced

Once again, we have used the tweets and notes from our creators as a reference for our implementation decisions and specification considerations. Thank you as always!

If you post your notes or tweets with the hashtag #noteで数式 (#noteMathFormula), we may feature them on the official note page or our official social media accounts.

At note, we develop features with the mission of "making it possible for everyone to start and continue creating." Following this mathematical expression feature, we are continuing to consider improvements based on your opinions and requests so that we can cover all methods of expression.

We will continue to create an environment where it is easy to engage in creative activities, so please let us know your opinions.

For improvements and requests regarding features, please use note feedback. For other inquiries, please use the
request submission form.

* note is constantly improving, and page designs may change due to future improvements. Therefore, please check the help page for the latest version of the new features announced here.

▶ How to use formula notation