(1)-2x^2+13-15=0 (2)x^2=2√2x-2 (3)(2/3)x^2-(1/6)x=1/2

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 15:14:41

(1)-2x^2+13-15=0 (2)x^2=2√2x-2 (3)(2/3)x^2-(1/6)x=1/2
(1)-2x^2+13-15=0 (2)x^2=2√2x-2 (3)(2/3)x^2-(1/6)x=1/2

(1)-2x^2+13-15=0 (2)x^2=2√2x-2 (3)(2/3)x^2-(1/6)x=1/2
(1)-2x^2+13-15=0
2x²-13x+15=0
(2x-3)(x-5)=0
x1=3/2 x2-5

(2)x^2=2√2x-2
x^2-2√2x+2=0
(x-√2)^2=0
x=√2

(3)(2/3)x^2-(1/6)x=1/2
4x^2-x=3
4x^2-x-3=0
(4x+3)(x-1)=0
x1=-3/4 x2=1

因式分解法解下列方程 1、用因式分解法解下列方程:(1)3y^2-5y=0 (2)4x^2=12x (3)x^2+9=-6x (4)9x^2=(x-x^3-3x^2-13x+15 =x^3-3x^2+2x-15x+15 =x(x^2-3x+2)-15(x-1) =x(x-2)(x-1)-15(x-1) =(x-1)[x(x-2)-15] =(x-1)[x^2-2x-15] =(x-1)(x-5)(x+ matlab解数值分析题p=(x-1)*(x-2)*(x-3)*(x-4)*(x-5)*(x-6)*(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)解为1,2,3……,20取多个非常小的数用软件工具求解方程p(x)+n*x^19=0,并 1、1/2x=2/x+32、x/x+1=(2x/3x+3)+13、2/x-1=4/x²-14、5/x²+x-1/x²-x=0 (x)-2x·x-x-2x+1=0求x的值, 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550必须用解方程 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 因式分解:(1)3x^2+7x+2 (2)5x^2+13x-6=0 (3)6x^2+13x-15=0 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 先化简再求值(x-1/x-x-2/x+1)/(2x²-x/x²+2x+1)且x²-x-1 =0 (X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0 请问,这十道关于一元一次方程的题目我做对了吗?(1)2X+3X+4X=189X=18X=2(2)13X-15X+X=-3-1X=-3X=3(3)2.5X+10X-6X=15-21.56.5X=6.5X=1(4)4X+3(2X-3))=12-(X+4)4X+6X-9=12X-4810X-12X=-48+9-2X=-57X=28.5(5) 7X+2(3X-3)=207X+6X-6=2013X=20+6 f(x)=(x+1)ln(x+1)+m(x^2+2x) x>=0时,f(x) (x-2)(x²-6x-9)-x(x²-2x-15),其中x=1/3 MATLAb编程解方程clear;clcsyms xfor n=1:6X2=solve('(x-1)*(x-2)*(x-3)*(x-4)*(x-5)*(x-6)*(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)+1e-n*x^19=0',x);double(X2)end与直接代入n=1,2,...6算出来 如果X*X--1=0,那么X*X*X+2*X*X+2008=几? 已知x*x+x-1=0 求x*x*x-2x+11=? 用matlab求解一个优化问题(目标函数非线性,约束函数线性)min f(x)=12*x(1)+21*x(2)+21*x(3)+13*x(4)+20*x(5)+23*x(6)+15*x(7)+17*x(8)+27*x(9)+17*x(10)+19*x(11)+31*x(12)+200*[(x(1)+x(2)+x(3))^0.6+(x(4)+x(5)+x(6))^0.6+(x(7)+x(8)+x(9)) 已知x*x+x-1=0求x*x*x-2x+2010的值