=5/3.(1/1-1/4+1/4-1/7+...+1/100-1/103)
=5/3.(1/1-1/103)
=5/3.102/103
=170/103
=5/3.(1/1-1/4+1/4-1/7+...+1/100-1/103)
=5/3.(1/1-1/103)
=5/3.102/103
=170/103
\(S=\frac{5}{1.4}+\frac{5}{4.7}+...+\frac{5}{100.103}=?\)
tính nhanh:
\(\frac{5}{1.4}+\frac{5}{4.7}+\frac{5}{7.10}+.........+\frac{5}{100.103}\)
Tính:
\(A=\frac{5}{1.4}+\frac{29}{4.7}+\frac{71}{7.10}+...+\frac{10301}{100.103}\)
Tính :
D= \(\frac{5}{1.4}\)+ \(\frac{5}{4.7}\)+ .....+\(\frac{5}{100.103}\)
Tính tổng:
B= \(\frac{5}{1.4}\)+ \(\frac{5}{4.7}\)+...+\(\frac{5}{100.103}\)
B = \(\frac{5}{1.4}\)+ \(\frac{5}{4.7}\)+ ..... + \(\frac{5}{100.103}\)
giúp mk với nha mina
Tính:
a) \(\frac{5}{1.4}+\frac{5}{4.7}+...+\frac{5}{100.103}\)
b) \(\frac{1}{15}+\frac{1}{35}+...+\frac{1}{2499}\)
Bài 3 Tính giá trị biểu thức\(\left(1_{ },5\right).\frac{-2}{3}+\left(2,5-\frac{3}{4}\right):1\frac{3}{4}\)
B=\(\frac{1}{1.4}+\frac{1}{4.7}+\frac{1}{7.10}+...+\frac{1}{100.103}\)
Tính giá trị biểu thức
2) K= \(\frac{1}{6}\)+\(\frac{1}{12}\)+\(\frac{1}{20}\)+...+ \(\frac{1}{9900}\)
3) L= \(\frac{5}{1.4}\)+\(\frac{5}{4.7}\)+ .... + \(\frac{5}{100.103}\)
