Update index.md

docs/source/index.md

@@ -1,40 +1,11 @@
-# Jupyter Notebook Documentation
-
-Welcome to the **Jupyter Notebook** documentation site. **Jupyter Notebook**
-is a simplified notebook authoring application, and is a part of [Project
-Jupyter](https://docs.jupyter.org/en/latest/), a large umbrella project
-centered around the goal of providing tools (and [standards](https://docs.jupyter.org/en/latest/#sub-project-documentation))
-for interactive computing with [computational notebooks](https://docs.jupyter.org/en/latest/#what-is-a-notebook).
-
-A [computational notebook](https://docs.jupyter.org/en/latest/#what-is-a-notebook)
-is a shareable document that combines computer
-code, plain language descriptions, data, rich visualizations like 3D models,
-charts, graphs and figures, and interactive controls. A notebook, along with
-an editor like **Jupyter Notebook**, provides a fast interactive environment for
-prototyping and explaining code, exploring and visualizing data, and sharing
-ideas with others.
-
-**Jupyter Notebook** is a sibling to other notebook authoring applications under
-the Project Jupyter umbrella, like [JupyterLab](https://jupyterlab.readthedocs.io/en/stable/)
-and [Jupyter Desktop](https://github.com/jupyterlab/jupyterlab-desktop).
-Jupyter Notebook offers a lightweight, simplified experience compared to JupyterLab.
-
-Read more about how to use **Jupyter Notebook** on this site, in the [User
-Documentation](notebook.md).
-
-```{image} ./_static/images/notebook-running-code.png
-
-```
-
-- [Installation](https://jupyter.readthedocs.io/en/latest/install.html)
-- [Starting the Notebook](https://jupyter.readthedocs.io/en/latest/running.html)
-
-```{toctree}
-:maxdepth: 2
-
-user-documentation
-configuration
-migrate_to_notebook7
-contributor
-changelog
-```
+T_values = np.linspace(1, 2, 100)
+C_values = [w * H - service_efficiency(I, T) for T in T_values]
+
+plt.figure(figsize=(10, 6))
+plt.plot(T_values, C_values, label='育児の機会費用')
+plt.title('技術進歩と育児の機会費用の関係')
+plt.xlabel('技術進歩係数 (T)')
+plt.ylabel('育児の機会費用 (C)')
+plt.legend()
+plt.grid(True)
+plt.show()