卡丹公式kadan gongshi
实系数一元三次方程
y3+py+q=0
的三个根是
| 式中 |
当p=0时，可得 A=0,B=-q或A=-q,B=0.此时方程为y3+q=0，它的三个根是
上述公式是意大利数学家卡丹最早公布的，所以称为卡丹公式.
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