S=(1/1x3)+(1/3x5)+省略号+1/(2n-1)(2n+1)s=?好象要用什么恒等式1/k(k+1)=(1/k)-(1/k+1)哦还有要有解题步骤哦
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![S=(1/1x3)+(1/3x5)+省略号+1/(2n-1)(2n+1)s=?好象要用什么恒等式1/k(k+1)=(1/k)-(1/k+1)哦还有要有解题步骤哦](/uploads/image/z/3019087-55-7.jpg?t=S%3D%281%2F1x3%29%2B%281%2F3x5%29%2B%E7%9C%81%E7%95%A5%E5%8F%B7%2B1%2F%282n-1%29%282n%2B1%29s%3D%3F%E5%A5%BD%E8%B1%A1%E8%A6%81%E7%94%A8%E4%BB%80%E4%B9%88%E6%81%92%E7%AD%89%E5%BC%8F1%2Fk%28k%2B1%29%3D%281%2Fk%29-%281%2Fk%2B1%29%E5%93%A6%E8%BF%98%E6%9C%89%E8%A6%81%E6%9C%89%E8%A7%A3%E9%A2%98%E6%AD%A5%E9%AA%A4%E5%93%A6)
S=(1/1x3)+(1/3x5)+省略号+1/(2n-1)(2n+1)s=?好象要用什么恒等式1/k(k+1)=(1/k)-(1/k+1)哦还有要有解题步骤哦
S=(1/1x3)+(1/3x5)+省略号+1/(2n-1)(2n+1)
s=?好象要用什么恒等式1/k(k+1)=(1/k)-(1/k+1)哦还有要有解题步骤哦
S=(1/1x3)+(1/3x5)+省略号+1/(2n-1)(2n+1)s=?好象要用什么恒等式1/k(k+1)=(1/k)-(1/k+1)哦还有要有解题步骤哦
参看http://zhidao.baidu.com/question/23852575.html
因式分解:x5+x3+1
解一道方程组x1+x2+x3=5,x2+x3+x4=1,x3+x4+x5=-5,x4+x5+x1=-3,x5+x1+x2=2
x1-x2+x3=1 x2-x3+x4=2 x3-x4+x5=3 x4-x5+x1=4 x5-x1+x2=5 求x1,x2,x3,x4,x5
求解线性方程组 x1-2x2+3x3-x4-x5=2 x1+x2-x3+x4-2x5=1 2x1-求解线性方程组x1-2x2+3x3-x4-x5=2x1+x2-x3+x4-2x5=12x1-x2+x3-2x5=22x1+2x2-5x3+2x4-x5=5
求非齐次线性方程组的通解x1+3x2+5x3-4x4=1x1+3x2+2x3-2x4+x5=-1x1-2x2+x3-x4-x5=3x1+2x2+x3-x4-x5=3
求非其次线性方程组 {x1+2x2+x3+x4+x5=1x1+2x2+x3+x4+x5=12x1+4x2+3x3+x4+x5=2-x1-2x2+x3+3x4-x5=5 2x3+4x4-2x5=6 的一般解
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
若x1,x2,x3,x4,x5满足方程组:x1-x2+x3=1 x2-x3+x4=2 x3-x4+x5=3 x4-x5+x1=4 x5-x1+x2=5 求x2,x3,x4的少打了个字,是求x2,x3,x4的值
求解一个方程急 X(1次方)+X2+X3=5 X2+X3+X4=1 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=2 求X的值,
解方程组X2+X3+X4=1 X1+X2+X3=5 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=2 求x1x2x3x4x5
解方程组X2+X3+X4=1 X1+X2+X3=5 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=2 求x1x2x3x4x5百度里的已经看过了,求别的方式,不准抄袭
写出x的各个答案就行了.x1+x2+x3=5x2+x3+x4=1x3+x4+x5=-5x4+x5+x1=-3x5+x1+x2=2
1/1x3+1/2x4+1/3x5+
1/1x3+1/3x5+.+1/2005x2008
3x5/3-5/3x3/1 怎么简算
1x2+2x3+3x4+4x5+.+15x16
计算1x3+3x5+5x7+…+97x99
x5-x4+x3-x2+x-1因式分解