数学题1/1*3+1/3*5+1/5*7+....1/97*99+1/99*101=?谢谢!
问题描述:
数学题1/1*3+1/3*5+1/5*7+....1/97*99+1/99*101=?谢谢!
答
0.5(1-1/3+1/3-1/5+1/5.-1/101)=0.5(1-1/101)=50/101
数学题1/1*3+1/3*5+1/5*7+....1/97*99+1/99*101=?谢谢!
0.5(1-1/3+1/3-1/5+1/5.-1/101)=0.5(1-1/101)=50/101