| 释义 |
▪ I. biquadrate, a. and n. Math.|baɪˈkwɒdreɪt|
[f. bi- prefix2 + quadrate, ad. L. quadrātus squared.]
The square of the square (power or root); the fourth power in arithmetic and algebra; = biquadratic.
1706Phillips, Biquadrate,..the fourth Power in Arithmetic and Algebra. 1806Hutton Course Math. I. 171 Its..cube (a3), or biquadrate (a4). Ibid. I. 203 The biquadrate root of 16a4 - 96a3x + 216a2x2 - 216ax3 + 81x4.
▪ II. biˈquadrate, v. Math.
[f. prec.]
trans. To raise (a number) to its fourth power.
1694Phil. Trans. XVIII. 70 Performed by squaring, cubing, biquadrating, etc. of the terms. |