78 lines
1.3 KiB
Plaintext
78 lines
1.3 KiB
Plaintext
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
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<mrow>
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<msub>
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<mi>I</mi>
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<mi>x</mi>
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</msub>
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<mfenced>
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<mrow>
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<mi>a</mi>
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<mo>,</mo>
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<mi>b</mi>
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</mrow>
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</mfenced>
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<mspace width="1em"/>
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<mo>=</mo>
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<mspace width="1em"/>
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<munderover>
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<mo>∑</mo>
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<mrow>
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<mi>i</mi>
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<mo>=</mo>
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<mi>k</mi>
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<mo>+</mo>
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<mn>1</mn>
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</mrow>
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<mi>N</mi>
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</munderover>
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<mfrac>
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<mrow>
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<mi>N</mi>
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<mo>!</mo>
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</mrow>
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<mrow>
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<mi>i</mi>
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<mo>!</mo>
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<mfenced>
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<mrow>
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<mi>N</mi>
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<mo>−</mo>
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<mi>i</mi>
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</mrow>
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</mfenced>
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<mo>!</mo>
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</mrow>
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</mfrac>
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<msup>
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<mi>x</mi>
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<mi>i</mi>
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</msup>
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<msup>
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<mi>y</mi>
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<mfenced>
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<mrow>
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<mi>N</mi>
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<mo>−</mo>
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<mi>i</mi>
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</mrow>
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</mfenced>
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</msup>
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<mspace width="1em"/>
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<mo>;</mo>
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<mspace width="1em"/>
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<mi>k</mi>
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<mo>=</mo>
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<mi>a</mi>
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<mo>−</mo>
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<mn>1,</mn>
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<mi>N</mi>
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<mo>=</mo>
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<mi>a</mi>
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<mo>+</mo>
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<mi>b</mi>
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<mo>−</mo>
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<mn>1</mn>
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</mrow>
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</math>
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