quadratic equation

音標(biāo)發(fā)音

The child then knows how to solve a quadratic equation .
於是學(xué)生就會(huì)解二次方程了。
It is a quadratic equation, so you get two solutions of which one of them is nonphysical, so you can reject that one.
這是一個(gè)兩次方程，你會(huì)得到兩個(gè),和物理無(wú)關(guān)的答案，你可以捨掉那一個(gè)。
The quadratic equation may have instilled horror in many of us. But for some 5 to 7 percent of the population even basic math—like the concept of the numbers 5 and 7—causes anxiety.
恐怕有很多人都對(duì)二次方程望而生畏吧…可是你知道麼，世界上有5%-7%的人麪對(duì)最基本的算術(shù)也會(huì)緊張焦慮。

They are going to accompany particles surely as every quadratic equation has two solutions.
他們是成對(duì)的粒子,正如每個(gè)二次方程都有兩個(gè)根一樣
耶魯公開課 - 基礎(chǔ)物理課程節(jié)選
He was trying to describe electrons, but the theory said there are two roots in the quadratic equation and the second root is mathematically as interesting as the first one.
他儅時(shí)衹是想去描述電子,但是數(shù)學(xué)理論告訴我們,二次方程有兩個(gè)根,而第二個(gè)根在數(shù)學(xué)上和第一個(gè)根一樣有趣
耶魯公開課 - 基礎(chǔ)物理課程節(jié)選

an equation that includes an unknown value that is multiplied by itself only once, and does not include an unknown value multiplied by itself more than once