1/6=1/2X3=1/2-1/3,1/12=1/3X4=1/3-1/4,1/20=1/4X5=1/4-1/5, (1)请用含m的等式表示规律.(2)请用(2)中的规律计算1/(x-1)(x-3) 快哦~亲们给力点.
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1/6=1/2X3=1/2-1/3,1/12=1/3X4=1/3-1/4,1/20=1/4X5=1/4-1/5, (1)请用含m的等式表示规律.(2)请用(2)中的规律计算1/(x-1)(x-3) 快哦~亲们给力点.
1/6=1/2X3=1/2-1/3,1/12=1/3X4=1/3-1/4,1/20=1/4X5=1/4-1/5, (1)请用含m的等式表示规律.
(2)请用(2)中的规律计算1/(x-1)(x-3)
快哦~亲们给力点.
1/6=1/2X3=1/2-1/3,1/12=1/3X4=1/3-1/4,1/20=1/4X5=1/4-1/5, (1)请用含m的等式表示规律.(2)请用(2)中的规律计算1/(x-1)(x-3) 快哦~亲们给力点.
1/(m*(m+1))=1/m-1/(m+1)
1/(x-1)(x-3)=1/2(1/(x-3)-1/(x-1))
X3-3X+1=0 求X3+1/X3
函数y=x3(1-x3)(0
因式分解(1+x+x2+x3)2-x3
试用克拉默法则求下列线性方程组的解 x1+x3=1;2x1+2x2+3x3=3;x2+x3=-1x1+x3=12x1+2x2+3x3=3x2+x3=-1
解方程组 X1-X2-4X3=-1 X2+X3=2 X1+X2-2X3=3线性代数
用初等行变换来解下列线性方程组(1)2x1-x2+3x3=3 3x1+x2-5x3=0 4x1-x2+x3=3 x1+3x2-13x3=-6(2) x1-2x2+x3+x4=1 x1-2x2+x3-x4=-1 x1-2x2+x3-5x4=5(3) x1-x2+x3-x4=1 x1-x2-x3+x4=0 x1-x2-2x3+2x4=-1/2
2x3-3x+三分之二x3-2x-三分之四x3+x-1,其中x=-二分之一
{2X1-X2+3X3=33X1+X2-5X3=04X1-X2+X3=3X1+3X2-13X3=-6{X1-2X2+3X3-4X4=4X2-X3+X4=-3X1+3X2-3X4=1-7X2+3X3+X4=-3
maxz=3x1+4x2+x3 -1+2x2+3x3
已知x2+3x2+1=0,求x3+x3分之一+2的值
若x+1/x3=3,为什么x3+1/x3的值等于18
若点(x1,1),(x2,2),(x3,-3)都是反比例函数y=-1/x图象上的点,则( ) A.x1>x2>x3 B.x1>x3>x2C.x3>x2>x1 D.x3>x1>x2
(-5)x3又3分之1+2x3又3分之1+(-6)x3又3分之1
设x=(1-√5)÷2则√(x3-1÷x3)x3就是x³
用列主元Gauss消元法解线性方程组{-x2-x3+x4=0,x1-x2+x3-3x4=1,2x1-2x2-4x3+6x4=-1,x1-2x2-4x3+x4=-1
求方程组X1-3X2-2X3-X4=1 3X1-8X2-4X3-X4=0 -2X1+X2-4X3+2X4=1 -X1-2X2-6X3+X4=2的解
求线性方程组{X1-3x2-2x3-X4=1;3X1-8X2-4X3-X4=0;-2X1+X2-4X3+2X4=1;-X1-2X2-6X3+X4=2的一般解.
1+2x3-4÷5=