作业帮0.625X8/5+5/8X3.2+5X1/8简算
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0.625X8/5+5/8X3.2+5X1/8简算
0.625X8/5+5/8X3.2+5X1/8简算
0.625X8/5+5/8X3.2+5X1/8简算
0.625X8/5+5/8X3.2+5X1/8
=5/8×（8/5+3.2+1）
=5/8×5.8
=3.625
0.625X8/5+5/8X3.2+5X1/8简算
（-5/12)x8/15x3/2x(-2/3)x0x(-1)= (-1)x(-5/4)x8/15x3/2x(-2/3)x0x(-1)= 的计算过程.（-5/12)x8/15x1/2x(-2/3)
3x8+4x8+5x8+6x8+7x8+8x8+9x8+10x8 的简便运算
(-5)x8x(-7)x(-0.25)= （-5/12)x8/15x3/2x(-2/3)x0x(-1)= (-1)x(-5/4)x8/15x3/2x(-2/3)x0x(-1)=
1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9+9x10+10x11
1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9=
6.25x0.56+8分之5x3.4+5x8分之1一定要最简便
14X3/7+0.65X8/13-2/7X14+5/13X0.65
画出求1X3+ 2X4+ 3X5+ 4X6+ 5X7+ 6X8+ 7X8的值的程序框图
问关于matlab解方程的问题~x是方程((0.5*X1+2*X2+3.5*X3+3*X4+5*X5+4.5*X6+6.5*X7+6*X8+7.5*X9+8*X10+0.5*X11+1.5*X12)-X14)/0.21*1.2*0.79+X15)*(27.32*(x-298)+6.226/2000*(x^2-298^2)-0.9502/(3*10^6)*(x^3-298^3))+(X2+2*X3+2*X4+3*X5+3*X6+4*X7+4*X8+4
(5x―15)x8=72
（5x-15)X8=72
（5x-12）x8=24
25%x=16x8分之5,
（-5）x8(-7)x(-0.25)
23X5/221/2-5/6X1/2(5/12-7/18)X363/4X8/9-1/37/9+7/9X85/8X7-5/8X3
计算：1/1x2+1/2x3+1/3x4+1/4x5+1/5x6+1/6x7+1/7x8+1/8x9+1/9x10.
1x2+2x3+3x4+4x5+5x6+6x7+7x8+8x9+9x10+10x11+ +nx(n+1)=