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(1-2/1)x(1-3/1)x(1-4/1)......(1-100/1)

"表示英寸,1英寸=2.54cm 所以你自己可以算下: 28.6(长)*17.1(高)*8.9(宽) 单位:cm

您好: (1-1/2^2)(1-1/3^2)(*1-1/4^2)...(1-1/2013^2) =1/2x3/2x2/3x4/3x3/4x5/4x...x2012/2013x2014/2013 =1/2x2014/2013 =1007/2013 不明白,可以追问 如有帮助,记得采纳,谢谢 祝学习进步!

这道题要求计算能力很强 3/x+1/(x-1)+4/(x-2)+4/(x-3)+1/(x-4)+3/(x-5)=0 [3/x+3/(x-5)]+[1/(x-1)+1/(x-4)]+[4/(x-2)+4/(x-3)]=0 (6x-15)/(x^2-5x)+(2x-5)/(x^2-5x+4)+(8x-20)/(x^2-5x+6)=0 (2x-5)[3/(x^2-5x)+1/(x^2-5x+4)+4/(x^2-5x+6)]=0 所...

1/(x-1)(x-2)=[(x-1)-(x-2)]/(x-1)(x-2)=(x-1)/(x-1)(x-2)-(x-2)/(x-1)(x-2)=1/(x-2)-1/(x-1) 其余类同 ∴1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+......1/(x-2008)(x-2009) =1/(x-2)-1/(x-1)+1/(x-3)-1/(x-2)+1/(x-4)-1/(x-3)+……+1/(...

void main() { int i; float s,t,sum; t=1;sum=0; s=1; for(i=2;i

(x-1)(x-2)(x-3)(x-4) =[(x-1)(x-4)][(x-2)(x-3)] =[x^2-5x+4][x^2-5x+6] =(x^2-5x)^2+10(x^2-5x)+24 =x^4-10x^3+35x^2-50x+24

g(x)=1-x+x²/2-x³/3+……-x^2013/2013 f(x)+3=0或g(x)-3=0 h(x)=f(x)+3=4+x-x²/2+x³/3-……+x^2013/2013 h'(x)=1-x+x^2-...........+x^2012 x=-1时,h'(1)=2013>0 -x≠1时,h'(x)=1-x+x^2-...........+x^2012=(-x)^2013-1]/[(-x)...

1. 1)f(-x)=-x*((1/2^(-x)-1)+1/2)=-x*((2^x/(1-2^x)+1/2*(1-2^x)/1-2^x)=x*(2+2^x-1)/(2^x-1)*1/2=x*((1/(2^x-1)+1/2) 得证 2) f(x)定义域为x不等于0,x属于R 当x>0时,恒有f(x)>0, 因为其为偶函数,当x0 2、 1)f(6)=3*6=18=f(a+2) 所以a=6...

原式=-1+1/2-1/2+1/3-1/3+1/4-......-1/2015+1/2016 =-1+1/2016 =-2015/2016

x+3.2=24/1.2=20 x=20-3.2=16.8

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