38 lines
846 B
HTML
38 lines
846 B
HTML
<div>
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The infinite sum
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<math display="inline">
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<mrow>
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<munderover>
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<mo>∑</mo>
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<mrow>
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<mi>n</mi>
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<mo>=</mo>
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<mn>1</mn>
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</mrow>
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<mrow>
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<mo>+</mo>
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<mn>∞</mn>
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</mrow>
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</munderover>
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<mfrac>
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<mn>1</mn>
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<msup>
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<mi>n</mi>
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<mn>2</mn>
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</msup>
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</mfrac>
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</mrow>
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</math>
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<br />
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Is equal to the real number
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<math display="inline">
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<mfrac>
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<msup>
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<mi>π</mi>
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<mn>2</mn>
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</msup>
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<mn>6</mn>
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</mfrac>
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</math>
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</div>
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