Uchiha Itachi
Uchiha Itachi
C = 1/100 - 1/100.99 - 1/99.98 - 1/98.97 - .... - 1/3.2 - 1/2.1
1/100-1/100.99-1/99.98-...-1/3.2-1/2.1
tính nhanh: 1/100-1/100.99-1/99.98-.....1/3.2-1/2.1
rút gọn A=\(\dfrac{1}{100}-\dfrac{1}{100.99}-\dfrac{1}{99.98}-\dfrac{1}{98.97}-...-\dfrac{1}{3.2}-\dfrac{1}{2.1}\)
1/100.99 - 1/99.98 - 1/98.97 - ... - 1/3.2 - 1/2.1
C = 1/100.99 - 1/99.98 - 1/98.97 - ... - 1/3.2 - 1/2.1
Tính : 1/100.99 - 1/99.98 - 1/98.99 ... - 1/3.2 - 1/ 2.1
Tính nhanh:
A= 1/100 - 1/100.99 - 1/99.98 - 1/98.97 - ... - 1/3.2 -1/2.1
3)Tính nhanh (nếu có):
e)1/100-1/100.99-1/99.98-...-1/3.2-1/2.1
g)-15,5.20,8 + 3,5.9,2 - 15,5.9,2 + 3,5.20,8