=>A= 1+1/2+1/3+...+1/2006-2*(1/2+1/4+....+1/2006)
=>A=1+1/2+1/3+....+1/2006-(1+1/2+.....+1/1003)
=> A=1/1004+1/1005+.....+1/2006
study well
k nha
Tính nhanh
A=1/1-1/2+1/3-....+1/2005-1/2006
B=1/1004+1/1005+...+1/2006
Ai nhanh mk cho 3 tk
Tính nhanh
A=1/1-1/2+1/3-...+1/2005-1/2006
B=1/1004+1/1005+...+1/2006
Ai giải nhanh mk tích cho!!
( 2007 - 2005 ) + ( 2003 - 2001 ) + ..... + ( 7 - 5 ) + ( 3 - 1 )
KẾT QUẢ DÃY TÍNH TRÊN LÀ?
A. 1003 B. 1004 C. 1005 D. 1006
( 2007 – 2005 ) + ( 2003 – 2001 ) +...+ ( 7 – 5 ) + ( 3 – 1)
Kết quả của dãy tính trên là:
A. 1003 1004 C. 1005 D. 1006
Giup minh với
tính 1/1002+1/1003+1/1004+1/1005+........+1/2002
1 Tính
A (1-1/2) * (1-1/3 ) * (1-1/4 ) * .....*(1-1/19)* ( 1-1/20)
B 3/2 * 4/3 * 6/5* ......* 2006/2005 * 2007/2006 * 2008/2007
2008+2007/2+2006/3+2005/4+2005/5+........................3/2006+2/2007+1/2008
1/2+1/3+1/4+1/5+....................+1/2009
2008+2007/2+2006/3+2005/4+2005/5+........................3/2006+2/2007+1/2008
1/2+1/3+1/4+1/5+....................+1/2009
A=20008+2007/2+2006/3+2005/4+...+2/2007+1/2008 / 1/2+1/3+1/4+1/5+1/6+1/7+...+1/2008
a=...
