二重根

èrchónggēn

noun

Meanings

1 double root (math)
2 a repeated root of an equation with multiplicity 2

Characters

repeated, multiple

Examples

这个二次方程有一个二重根。

Zhège èrcì fāngchéng yǒu yīgè èrchónggēn.

This quadratic equation has a double root.

判别式等于零时方程有二重根。

Pànbiéshì děngyú língshí fāngchéng yǒu èrchónggēn.

When the discriminant equals zero, the equation has a double root.

Tips

memory

Reads literally as 二 'two' + 重 'repeated' (here pronounced chóng, not zhòng) + 根 'root' - a root that appears twice. Compare 三重根 (triple root).

Stroke Order

二 èr

重 zhòng

根 gēn