Tính B:
B= 1/10.9 + 1/18.13 + 1/26.17 + ..... + 1/802.405
Tính B:
B=1/10.9 + 1/18.13 + 1/26.17 + ... + 1/802.405
. là dấu nhân nha
\(\frac{1}{10.9}+\frac{1}{18.13}+\frac{1}{26.17}+...+\frac{1}{802.405}\)
Tính
Tính tổng:\(\frac{1}{10.9}+\frac{1}{18.13}+\frac{1}{26.17}+...+\frac{1}{802.405}\)
Tính
a) A= 1/2.9 + 1/9.7 + 1/7.19 +....+ 1/252.509
b) B= 1/10.9 + 1/18.13 + 1/26.17+.... + 1/802.405
Nhanh nhaaa iuuu
Tính:
\(\frac{1}{10.9}+\frac{1}{18.13}+\frac{1}{26.17}+...+\frac{1}{802.406}\)
B= 1/10.9 +1/18.13 +1/26.17 +...+1/802.405
Tính :
a)A=1/2.9 + 1/9.7 + 1/7.19 + ...+1/252.509
b)B=1/10.9 + 1/18.13 + 1/26.17 + ... + 1/802.405
c)C=2/4.7 - 3/5.9 +2/7.10 - 3/9.13+...+2/301.304 - 3/401.405
Tính hợp lý
C = \(\frac{1}{10.9}\)+ \(\frac{1}{18.13}\)+ \(\frac{1}{26.17}\)+ ............+ \(\frac{1}{802.405}\)
