汉英词典
Chinese-English Dictionary
MEANING OF 判别式
判别式 (判別式)
discriminant (e.g. b^2-4ac in the formula for the roots of a quadratic equation)
用以判别一元n次方程是否有重根的表达式。如一元二次方程ax2+bx+c=0的判别式是δ=b2-4ac,当δ=0时,方程有二重根。
pàn () bié/biè shì
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