单词 | de Gua's rule |
释义 | de Gua's rule [dǝ`gwäz ´rül] MATHEMATICS The rule that if, in a polynomial equation f (x ) = 0, a group of r consecutive terms is missing, then the equation has at least r imaginary roots if r is even, or the equation has at least r + 1 or r - 1 imaginary roots if r is odd (depending on whether the terms immediately preceding and following the group have like or unlike signs). |
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