x(x+2)(x+6)+20x+6=0
来源：学生作业帮助网 编辑：六六作业网 时间：2024/05/16 17:19:55
x(x+2)(x+6)+20x+6=0x(x+2)(x+6)+20x+6=0x(x+2)(x+6)+20x+6=0x(1)=(38361^(1/2)/9+559/27)^(1/3)-32/(9*(38
x(x+2)(x+6)+20x+6=0
x(x+2)(x+6)+20x+6=0
x(x+2)(x+6)+20x+6=0
x(1)=(38361^(1/2)/9 + 559/27)^(1/3) - 32/(9*(38361^(1/2)/9 + 559/27)^(1/3)) - 8/3,
x(2)=16/(9*(38361^(1/2)/9 + 559/27)^(1/3)) - (38361^(1/2)/9 + 559/27)^(1/3)/2 - 8/3- 3^(1/2)*i*(16/(9*(38361^(1/2)/9 + 559/27)^(1/3)) + (38361^(1/2)/9 + 559/27)^(1/3)/2)*i ,
x(3)=16/(9*(38361^(1/2)/9 + 559/27)^(1/3)) - (38361^(1/2)/9 + 559/27)^(1/3)/2 - 8/3+ 3^(1/2)*(16/(9*(38361^(1/2)/9 + 559/27)^(1/3)) + (38361^(1/2)/9 + 559/27)^(1/3)/2)*i ,
化简一下就是
x(1)=-0.196959489589038;
x(2)=-3.90152025520548 - 3.90400522823014 i;
x(3)=-3.90152025520548+3.90400522823014 i
答案很复杂.自己验算一下哦.
x(x+2)(x+6)+20x+6=0
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
(2-x)(6-x)(12-x)(20-x)=
(x^-2x)^-5(x^-2x)-6=0
(x+2)(x-3)(x-6)(x-1)=0
6/(x-1)-(x+2)/x(x-1)=0
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
1/(x*x-2x-3)+2/(x*-x-6)+3/(x*x+3x+2)=0
2x(x-1)-x(3x+2)=(-x-1)(x+6)-20
15X(4X-8)-5X(2X+10)=6X(5X-20)
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
5(x的2次方+X-3)-4x(6+x)+x(-x+4)=0
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
请假一下可否用lingo如何求解下面的非线性0-1规划的解?目标函数是：f=300000/(4364.64*(x(1)+x(2)+x(3)+x(4)+x(5)+x(6))+10392*(x(7)+x(8)+x(9)+x(10)+x(11)+x(12)+x(13)+x(14)+x(15)+x(16)+x(17)+x(18)+x(19)+x(20)+x(21)+x(22)+x(23)+x(24