15(18+X)x7/30=18x5+3X

15(18+X)x7/30=18x5+3X 帮我用lingo或者lindo算个题呗?x1+x4+x5+x6+x7>20x1+x2+x5+x6+x7>13x1+x2+x3+x6+x7>10x1+x2+x3+x4+x7>12x1+x2+x3+x4+x5+>16x2+x3+x4+x5+x6+>18x3+x4+x5+x6+x7>20格式不对也改下哈,>在lingo中应该和>=一样吧?min=(5x1+4x2+3x3+3x4+3x5+3x6+4x7) x1-x2+x3=1x2-x3+x4=21若x1,x2,x3,x4,x5满足方程组 x3-x4+x5=3x4-x5+x1=4x5-x1+x2=5求x2 x3 x4的值2已知 x1+x4+x6+x7=39 x2+x4+x5+x7=49 x3+x5+x6+x7=41 x4+x7=13 x5+x7=14 x6+x7=9 x1+x2+x3+x4+x5+x6+x7=9求x7的值若x1,x2,x3,x4,x5满足方程组 x1-x Min Z= X1 +X2 +X3 +X4 +X5 +X6 +X7 +X8S.T.2X1 +X2 +X3 +X4 =1002X2 +X3 + 3X5 +2X6 + X7 =100X1 + X3 + 3X4 +2X6 +3X7 +4X8 =100X1,X2,X3,X4,X5 ,X6,X7,X8 >=0经过计算的最优解是X*= (40 ,20,0,0,0 ,30 ,0 ,0)T Z* =90但该解也是最优解X*= (10 ,50,0 2X/1x3+2X/3x5+2X/5x7+…+2X/2003x2005=2004 7(x-9-5-7)+0x9+1x5+2x7=y6(x-5-2-1)+15x1+14x2+13x5=y SIN(X)=X-X3/3!+X5/5!-X7/7!+.X3代表3次方,/代表除法 用C编程啊, sn=1/1x3+4/3x5+9/5x7+```````+n2/(2n-1)x(2n+1) 8x-6x7=18 （18+7分之2）x9分之7 7分之4x5分之3+5分之2x7分之4 9分之8x10—9分之8 16分之15x（5分之3+3分之1）（18+7分之2）x9分之7 7分之4x5分之3+5分之2x7分之4 9分之8x10—9分之8 16分之15x（5分之3+3分之1 ( )x5=( )x7=5分之4x(( )x5=( )x7=5分之4x( )=98分之11x( )=1 观察下列每组算式,并根据你发现的规律计算：{4x5=20,{5x6=30,{6x7=42,{3x(-6)=-18; {4x(-7)=-28; {5x(-8)=-40.已知122x123=15006,求121x9-124）的值 2X/1x3+2X/3x5+2X/5x7+2x/7x9+2x/9x11=10 x=? (8x+4)X5=(11x+1)X7+1解方程,拜托各位,快点! 1/1X3 + 1/3X5 + 1/5X7 + .+ 1/(2x-1)(2x+1)=10/21(x为整数）x为正整数 解方程2＋2x/1X3+2x/3X5+2x/5X7+2x/7X9=10 matlab中求解二元函数的极小值,20分.x0=[22,38];x1=[8,13];x2=[5,81];x3=[52,32];x4=[38,11];x5=[16,12];x6=[81,63];x7=[18,45];x8=[62,12];A=[17,40,60,25,30,15,50,8,35];w=A*[sqrt((x-x0)*(x-x0)`);sqrt((x-x1)*(x-x1)`);sqrt((x-x2)*(x-x2)`);sqrt((x-x 用秦九韶算法计算当X=3时多项式f(x)=7X7+6x6+5x5+4x4+3X3+2x2+X的值