Gaussian_normal_distribution.ipynb

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      "source": [
        "%matplotlib inline\n",
        "import numpy as np\n",
        "from matplotlib_inline import backend_inline\n",
        "from d2l import torch as d2l\n",
        "import math"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "def normal(x, mu, sigma):\n",
        "    p = 1/math.sqrt(2*math.pi * sigma**2)\n",
        "    return p * np.exp(-0.5 * (x - mu)**2 / sigma**2)"
      ],
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      "execution_count": 9,
      "outputs": []
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      "source": [
        "x = np.arange(-7, 7, 0.01)\n",
        "\n",
        "params = [(0, 1), (0, 2), (3, 1)]\n",
        "d2l.plot(x, [normal(x, mu, sigma) for mu, sigma in params], xlabel='x',\n",
        "         ylabel='p(x)', figsize=(4.5, 2.5),\n",
        "         legend=[f'mean {mu}, std {sigma}' for mu, sigma in params])"
      ],
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        "outputId": "bc7facbe-4304-44bf-8026-ffa852234ab9"
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      "execution_count": 10,
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