1/1*2+1/2*3+1/3*4+.+1/98*99+1/99*100怎么算
2个回答
1/1*2+1/2*3+1/3*4+.+1/98*99+1/99*100
=1-1/2+1/2-1/3+1/3-1/4+……+1/98-1/99+1/99-1/100
=1-1/100
=99/100
相关问题
计算:1/1*2+1/2*3+1/3*4.+1/98*99+1/99*100=? 怎么简便
(1*1+3*3+... +99*99)-(2*2+4*4+... +100*100)怎么算?
1*2/1+2*3/1+3*4/1+.98*99/1+99*100/1=?
1/1+2*1/2+3*1/3+4```*1/98+99*1/99+100
(-1)+2+(-3)+4+(-5).+98+(-99)+100怎么算?
1+2+3+4+5…………+99+100+99+98+98+……+4+3+2+1
(1+100+100^2+100^3+……+100^99)/(1+2+3+……+98+99+100+99+98+……+2
计算:1-100+2-99+3-98+…+98-3+99-2+100-1
1+2+3+4+.99+100+99+98+97.+1
1/(1*2)+1/(2*3)+1*(3*4)+1/(4*5)……1/(98*99)+1/(99+100)=?