3/15+3/35+3/63+...+3/9603
=3/3.5+3/5.7+3/7.9+...+3/97.99
=3/2.(2/3.5+2/5.7+2/7.9+...+2/97.99)
=3/2.(1/3-1/5+1/5-1/7+1/7-1/9+...+1/97-1/99)=3/2.(1/3-1/99)
=3/2.32/99
=16/33
3/15+3/35+3/63+...+3/9603 = ?
3/15+3/35+3/63+....+3/9603
S=2/3+2/15+2/35+2/63+2/99+...+2/9603 hay so sanh voi 1
tính
1/3+13/15+33/35+61/63+...+9601/9603+9997/9999
tl nhanh jup mik, đag cần gấp
jup mik nha
Tính tổng:
1/15+1/35+1/63+1/99+1/143
1/5*9+1/9.13+1/13*17+...+1/25*29
2/15+3/15+2/63+...+2/9603
mơn mọi người
Tính nhanh:2/15+2/35+2/63+.....+2/9603=?
jup mik câu này với
Tính Tổng:
2/15+3/15+2/63+...+2/9603
Tính A
A= 4/3 + 16/15 + 36/35 + ..... +9604/9603
Tính A
A= 4/3 + 16/15 + 36/35 + ..... +9604/9603
