6×6x6= 7×7×7= 8×8×8= 9×9×9=

6×6x6= 7×7×7= 8×8×8= 9×9×9= (8十8)X6=? 1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9= 10x-(8-x)x6=48 用matlab线性编程 min=8*x1+10*x2+7*x3+6*x4+11*x5+9*x612*x1+9*x2+25*x3+20*x4+17*x5+13*x6>=60;35*x1+42*x2+18*x3+31*x4+56*x5+49*x6>=150;37*x1+53*x2+28*x3+24*x4+29*x5+20*x6>=125;其中x>0,x (X+30)x6+(24-X)x6=2[(30+X)x6-6] 六年级上册人教版数学第二单元分数简便算法练习题 见下9/4x2/21-5/4x6/5 16/15x21/20x5/1 (6/5-12/5)x36 2/1x3/2x4/3x5/4x6/5 = = = =(6/5+12/5)x48 12x4/3x12/5 16x(4/3-8/3) 11/8x6/7x4/11 = = = =急 1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9+9x10+10x11+ +nx(n+1)= 下面各题对吗?把不对的改正过来9-4X15分之4=5X15分之4=3分之414分之3+14分之5X8分之7=14分之8X8分之7=2分之1（8分之3+7分之3）X6分之5=15分之6X6分之5=3分之1（8分之7-5分之1）X3分之6X6分之5=2X6分之5=3分 算数6x7=42,6.6x6.7=44.22是什么规律 怎样解释5x5=6x6? x-1/7x=2/3X6/7 7X6/4+8X2/4 用简便方法计算 min 3x1+16x2+16x3+50x4+39x5+52x6+45x7+10x8+15x9s.t.56x1+113x4+109x6+179x7+56x8+34x9>=9049x2+45x5>=6060x1+46x3+46x8>=8025x1+7x6+8x7+8x8+5x9>=9040x1+275x4+110x6+55x7>=60x1 5.4x6.7-5x=20.09的解 1.2x6十8x=12解方程, 已知f (x6) = log2x,那么f (8)等于 8x-7.5x6=12怎么解开