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单词 rational function
释义
rational function

Mathematics
  • A rational function is one f of the form f(x) = g(x)/h(x), where g(x) and h(x) are polynomials, usually with coefficients from a field F. The rational functions themselves then make a field denoted F(x). Addition and multiplication are defined as expected by

    f1(x)g1(x)+f2(x)g2(x)=g2(x)f1(x)+f2(x)g1(x)g1(x)g2(x),(f1(x)g1(x))(f2(x)g2(x))=f1(x)f2(x)g1(x)g2(x).

    Compare polynomial ring.


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