当前位置：网站首页>Univariate cubic equation - relationship between root and coefficient

Univariate cubic equation - relationship between root and coefficient

2022-07-06 21:37:00 【m0_ sixty-six million eight hundred and seventeen thousand two 】

a x 3 + b x 2 + c x + d = 0 ax^3+bx^2+cx+d=0\\ ax3+bx2+cx+d=0 set up ： ( x − x 1 ) ( x − x 2 ) ( x − x 3 ) = 0 set up ： (x-x_1)(x-x_2)(x-x_3)=0\\ set up ：(x−x1​)(x−x2​)(x−x3​)=0 { x 1 + x 2 + x 3 = − b a x 1 x 2 + x 2 x 3 + x 3 x 1 = c a x 1 x 2 x 3 = d a \left\{ \begin{aligned} &x_1+x_2+x_3&=&-\frac{b}{a}\\ &x_1x_2+x_2x_3+x_3x_1&=&\frac{c}{a}\\ &x_1x_2x_3&=&\frac{d}{a}\\ \end{aligned} \right. ⎩⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎧​​x1​+x2​+x3​x1​x2​+x2​x3​+x3​x1​x1​x2​x3​​===​−ab​ac​ad​​

原网站

版权声明
本文为[m0_ sixty-six million eight hundred and seventeen thousand two ]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/02/202202131122315582.html

边栏推荐

猜你喜欢

随机推荐