sample.py

sample.py

import marimo

__generated_with = "0.17.1"
app = marimo.App()


@app.cell
def _():
    import numpy as np
    import matplotlib.pyplot as plt

    print("hoge")
    return np, plt


@app.cell
def _(np, plt):
    # x の範囲を定義 (log(1+x) のため x > -1)
    x = np.linspace(0, 5, 1000)

    # y1 = x, y2 = x * log(1 + x) を計算
    y1 = x
    y2 = x * np.log(1 + x)

    # グラフを描画
    fig, ax = plt.subplots(figsize=(10, 6))
    ax.plot(x, y1, label="y = x", linewidth=2)
    ax.plot(x, y2, label="y = x * log(1 + x)", linewidth=2)

    # 交点 x = e - 1 を示す
    x_intersect = np.e - 1
    y_intersect = x_intersect
    ax.axvline(
        x_intersect,
        color="red",
        linestyle="--",
        alpha=0.5,
        label=f"x = e - 1 ≈ {x_intersect:.3f}",
    )
    ax.plot(x_intersect, y_intersect, "ro", markersize=8)

    ax.set_xlabel("x")
    ax.set_ylabel("y")
    ax.set_title("x と x * log(1 + x) のグラフ")
    ax.legend()
    ax.grid(True, alpha=0.3)

    plt.tight_layout()
    fig
    return


if __name__ == "__main__":
    app.run()