()÷2=5/13,1/2x()=4/7,0.5=6/()=4÷()=1:()
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()÷2=5/13,1/2x()=4/7,0.5=6/()=4÷()=1:()
()÷2=5/13,1/2x()=4/7,0.5=6/()=4÷()=1:()
()÷2=5/13,1/2x()=4/7,0.5=6/()=4÷()=1:()
依次是:10/13、8/7、12、8、2.
10/13 8/7 12 8 2
10/13
解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
x+(x+1)+(x+2)=48x+(x-1)+(x-2)=487×(43-x)+5x+15=10×(43-x)+(x+3)×7(x-3.6)÷4=(x+4.8)÷8(x+10)×4=(0.6x+10)×5
*-----------------------------------------------*| 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 ||
已知f(x-1)=x²+4x-5则f(x)的表达式是() A x²+6x B x²+8x+7已知f(x-1)=x²+4x-5则f(x)的表达式是()A x²+6xB x²+8x+7C x²+2x-3D x²++6x-10
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x-
(x平方+7x+10)/(x平方+6x+5) × (x三次方+1)/(x平方+4x+4) ÷ (x平方-x+1)/x-2 其中,x=4.
(1) (x+960)×80%=x-832 (2) (2x-3)÷7=59-2x (3) 75%x+40%×(14-x)=...(1) (x+960)×80%=x-832(2) (2x-3)÷7=59-2x(3) 75%x+40%×(14-x)=50%×14(4) 3/5x=(x+10)×3/5(5) 1/2+1/6+1/12+1/20+1/30+1/42
计算:[(x+2)/(x+3) - (x+1)/(x+2) + (x+4)/(x+5) - (x+3)/(x+4) / (x^2 + 7x + 13)/(x^2 + 8x + 15)
[(x+2)/(x+3)-(x+1)/(x+2)+(x+4)/(x+5)-(x+3)/(x+4)]/[(x的平方+7x+13)/(x的平方+8x+15)]
1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2}
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
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))
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
EXCEL两表间同时满足两个条件数据引用如题:表1为原始数据表1 2 3 4 5 6 7 8 9 10.A X X X X X X X X X XB X X X X X X X X X XC X X X X X X X X X XD X X X X X X X X X X .表2(A列) (B列) (C列)A 1A 3B 8B 5C 2D 3......
(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
x²+1/x²-3(x+1/x)+4=0 3x²-12x-2√(x²-4x+7)+13=0要答题过程,