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<head><title>bessel18</title>
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<body>
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  <mrow>
    <msub>
      <mi>I</mi>
      <mn>1</mn>
    </msub>
    <mfenced>
      <mrow>
        <mi>x</mi>
      </mrow>
    </mfenced>
    <mo>&#x2248;</mo>
    <mfrac>
      <mrow>
        <msup>
          <mi>e</mi>
          <mi>x</mi>
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      </mrow>
      <mrow>
        <msqrt>
          <mi>x</mi>
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    </mfrac>
    <mi>P</mi>
    <mfenced>
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        <mfrac>
          <mn>1</mn>
          <mi>x</mi>
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    <mo>;</mo>
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    <mi>x</mi>
    <mo>&gt;</mo>
    <mn>7.75</mn>
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