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二重根

èrchónggēn
noun

Meanings

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

Examples

HSK 7-9
这个二次方程有一个二重根。
Zhège èrcì fāngchéng yǒu yígè èrchónggēn.
This quadratic equation has a double root.
HSK 7-9
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