18/x=(18+2)/(x+0.5)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/27 08:20:10
x)3Я06ר63մI**_`g[dzi;~cɋ};Ny6}ۓ3^Zɮg3?QƓȠ,wE%\YgH
[K0OM꯰53/.H̳́
T!
7)80CہB Uk rEqzԱ ?9
18/x=(18+2)/(x+0.5)
18/x=(18+2)/(x+0.5)
18/x=(18+2)/(x+0.5)
方程两边同时乘以x(x+0.5)
于是原方程变为:
18(x+0.5)=20x
即18x+9=20x
所以2x=9
解得:x=4.5
两边乘x(x+0.5)
18x+9=20x
2x=9
x=4.5
18/x=(18+2)/(x+0.5)
x(x+0.5)·(18/x)=x(x+0.5)·(18+2)/(x+0.5)
18·(x+0.5)=20x
18x+18x0.5=20x
2x=9
x=4.5
∴x=4.5
90-x=2x(18+x)
x/(x^2+6x+18)=?
18/x=(18+2)/(x+0.5)
x+(x+3)+2x+(2x-18)=255
x^2=(x+30)X(x-18)怎么解
(x+30)*(x-18)=x*x
matlab中a(x)=x^4+3x^3+9x-18 b(x)=x^5-4x^3-18x+7 c(x)=x^7+6x^5+9x^3-5x^2-2 d(x)=x^9-8x^7+6x^5-4x^4+d(x)=x^9-8x^7+6x^5-4x^4+6x^2+3 求e(x)=a(x)*b(x)*c(x)*d(x)
解方程 式子 6-2x+3x=3x-4x+3x+18 6-x+3x=2x-5x+1 2x-1=5x-36-2x+3x=3x-4x+3x+18 6-x+3x=2x-5x+12x-1=5x-3
1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6解这些一元一次方程,
8x-5.5x=7.57.2x÷3.6=2 3x+6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x+x=1.8 3.2x+1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x+6x=4.5 18x-12x=5.42x-1.6x=3.6 18x+3x=7×6 1.2x-0.5x=0.71.3x+2.7x=1 4x-3.2x=6.4 0.8x+3.2x+3x=562.8x-2x=7.2
x^2+x^-2=x^4,化简(x+x^-1+x2)(x-x^-1+x²)(-x+x^-1+x²)(x+x^-1-x²)第18题,
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值紧急,,明天有用,,
1/x(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18
1/x(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18
1/x(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18
先化简,再计算2x^-18/4-4x+x^ ÷ 3-x/x^+x-6,其中x=4
请问,这6道关于一元一次方程的题目我都做对了吗?X-5=6X-5+5=6+5X=110.3X=45X=1505X-2X=93X=9X=32X+3X+4X=189X=18X=2-3X+0.5X=102.5X=10X=47X-4.5X=2.5乘以3-52.5X=2.5X=16X-7=4X-56X-4X=7+52X=12X=6
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));