quadratic
英[kw?'dr?t?k]
美[kwɑ'dr?t?k]
- adj. [數(shù)] 二次的
- n. 二次方程式
助記提示
1. so called because they involve the square of x.
2. 由正方形面積所表示的平方而引申出的這個(gè)含義。
中文詞源
quadratic 四倍的，平方的
quadr-,四，-atic,形容詞后綴。用于數(shù)學(xué)名詞平方。
英文詞源
- quadratic (adj.)
- 1650s, "square," with -ic + obsolete quadrate "a square; a group of four things" (late 14c.), from Latin quadratum, noun use of neuter adjective quadratus "square, squared," past participle of quadrare "to square, set in order, complete" (see quadrant). Quadratic equations (1660s) so called because they involve the square of x.
雙語(yǔ)例句
- 1. Every function whose derivative is linear is a quadratic function.
- 任意一個(gè)導(dǎo)數(shù)為線性函數(shù)的函數(shù)都是二次函數(shù).
來(lái)自辭典例句
- 2. This is usually a much stronger requirement than quadratic integrability.
- 這通常是一個(gè)比平方可積更強(qiáng)的要求.
來(lái)自辭典例句
- 3. The quadratic aperture of the cat's - eye diaphragm is imaged too large.
- 貓眼光欄的方形光孔成象太大.
來(lái)自辭典例句
- 4. Some quadratic equations have no real roots.
- 某些二次方程沒(méi)有實(shí)數(shù)根.
來(lái)自辭典例句
- 5. Their difference is a quadratic residue of 17.
- 它們的差是17的平方剩余.
來(lái)自辭典例句