解13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1) 1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3) 的简便方法 要简便的
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解13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1) 1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3) 的简便方法 要简便的
解13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1) 1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3) 的简便方法 要简便的
解13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1) 1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3) 的简便方法 要简便的
13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1)
左右两边分别通分得
(3x+1)/(x-4)(x-3)=(3x+1)/(x-5)(x-1)
∴3x+1=0或(x-4)(x-3)=(x-5)(x-1)
∴x=-1/3或x=7
1/(x+1)+1/(x+7)=1/(x+5)+1/(x+3)
2(x+4)/(x²+8x+7)=2(x+4)/(x²+8x+8)
x+4=0或x²+8x+7=x²+8x+8(无义)
x=-4
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550必须用解方程
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
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
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
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
matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24));
matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24));
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
解方程: 13/(x-4)-10/(x-3)=4/(x-5)-1/(x-1)
解方程:6x+3=5x=10 4x-6=3x-13(2x-1)=4(3-x) 15-2(x-3)=3x解方程:6x+3=5x=10 4x-6=3x-13(2x-1)=4(3-x) 15-2(x-3)=3x
解方程:12-4x=3x-2 13-2(2x-3)=5-(x-2) 7x-(3x+2)=22 5x+5=10(x-3)解方程:12-4x=3x-2 13-2(2x-3)=5-(x-2) 7x-(3x+2)=22 5x+5=10(x-3)
解方程:(x+10)+(x-15)=280-x x+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(...解方程:(x+10)+(x-15)=280-xx+15=3*(109-x) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7)13x-4(2x+5)=17(x-2)-4(2x-1)
x-x÷5=244 x-13=96-x+13 12x=10(x+20) 3.6x÷2=7.2×2x-x÷5=244x-13=96-x+1312x=10(x+20)3.6x÷2=7.2×2x÷3-x÷4=5这些题方程怎么解,
解分式方程:1/X-2+1/X-6=1/X-7+1/X-11/X-2+1/X-6=1/X-7+1/X-11/(x-2)-1/(x-1)=1/(x-7)-1/(x-6)(x-1-x+2)/(x-2)(x-1)=(x-6-x+7)/(x-7)(x-6)1/(x-2)(x-1)=1/(x-7)(x-6)(x-2)(x-1)=(x-7)(x-6)x^2-3x+2=x^2-13x+4213x-3x=42-210x=40x=4 为什么要移向才能解
[(1+x)^20+(1+x)^19+(1+x)^18+(1+x)^17+(1+x)^16+(1+x)^15+(1+x)^14+(1+x)^13+(1+x)^12+(1+x)^11+(1+x)^10+(1+x)^ 9+(1+x)^8+(1+x)^7+(1+x)^6+(1+x)^5+(1+x)^4+(1+x)^3+(1+x)^2+(1+x)]=28.51
3X-根号2=2X+1(精确到0.01) 11-X=10X 4X-3=2X-9 5+四分之1X=2分之1X-4 0.8X=0.7X-13X-根号2=2X+1(精确到0.01) 11-X=10X 4X-3=2X-9 5+四分之1X=2分之1X-4 0.8X=0.7X-1 解方程
解方程(x+1)(x+3)+4x=-13