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 <math><semantics><mrow><mfrac><mrow><mn>2</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow><annotation encoding="application/x-tex">\frac{2}{3}</annotation></semantics></math>3<svg width="400em" height="0.2em" viewBox="0 0 400000 200" preserveAspectRatio="xMinYMin slice"><path d="M0 80H400000 v40H0z M0 80H400000 v40H0z"></path></svg>2​
 <math><semantics><mrow><mfrac><mrow><mn>2</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow><annotation encoding="application/x-tex">\frac{2}{3}</annotation></semantics></math>3<svg width="400em" height="0.2em" viewBox="0 0 400000 200" preserveAspectRatio="xMinYMin slice"><path d="M0 80H400000 v40H0z M0 80H400000 v40H0z"></path></svg>2​
 <math><semantics><mrow><mi>f</mi><mo>(</mo><mi>x</mi><mo>)</mo><mo>=</mo><msubsup><mo>∫</mo><mrow><mo>−</mo><mi mathvariant="normal">∞</mi></mrow><mi mathvariant="normal">∞</mi></msubsup><mover accent="true"><mi>f</mi><mo>^</mo></mover><mo>(</mo><mi>ξ</mi><mo>)</mo><mspace width="0.16667em"></mspace><msup><mi>e</mi><mrow><mn>2</mn><mi>π</mi><mi>i</mi><mi>ξ</mi><mi>x</mi></mrow></msup><mspace width="0.16667em"></mspace><mi>d</mi><mi>ξ</mi></mrow><annotation encoding="application/x-tex">f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi</annotation></semantics></math>f(x)=∫−∞∞​f^​(ξ)e2πiξxdξ
 <math><semantics><mrow><mover accent="true"><mi>e</mi><mo>^</mo></mover></mrow><annotation encoding="application/x-tex">ê</annotation></semantics></math>e^
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Collaborative Calculation and Data Science

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sagemath

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