| 单词 | biquadratic |
| 例句 | Thus the square root of 81 is 9, and the square root of 9 is 3, which is the biquadratic root of 81. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z For n = 4, the biquadratic equation is solved with the help of the solution of the cubic. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z When a biquadratic equation contains all its terms, it has this form, x4 + Ax� + Bx� + Cx + D = 0, where A, B, C, D denote known quantities. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z The solution of cubic and of biquadratic equations, at first only in certain particular forms, but later in all forms, was mastered by Tartaglia and Cardan. The Age of the Reformation Equations of the first degree are called simple or linear; of the second, quadratic; of the third, cubic; of the fourth, biquadratic; of the fifth, quintic, and so on. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z Next to pure biquadratic equations, in respect of easiness of resolution, are such as want the second and fourth terms, and therefore have this form, x4 + qx� + s = 0. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z When a biquadratic equation has all its terms, its resolution may be always reduced to that of a cubic equation. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z |
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