a ) − 299 300 < − 101 102 . b ) − 163 167 > − 223 227 .
a ) − 299 300 < − 101 102 . b ) − 163 167 > − 223 227 .
So sánh:
a)\(3^{200}v\text{à}2^{300}\)
b) \(71^{50}v\text{à}37^{75}\)
c) \(\frac{2016014}{2017015}v\text{à}\frac{2016016014}{2017017015}\)
So sánh :
\(10^{30}v\text{à}2^{100}\)
\(5^{300}v\text{à}3^{453}\)
\(29^{12}v\text{à}18^{17}\)
tính tổng : 101 + (-102) + 103 + (-104) + ... + 299 + (-300)
tính tổng s=101+(-102)+103+(-104)+...+299+(-300)
1/101+1/102+.....+1/299+1/300>2/3
thực hiện phép tình :
-101+102-103+104+...-299+300
A = 101+(-102) + 103+(+104)+...+299+(-300)
1/101+1/102+1/103+...+1/299+1/300>2/3
Chứng tỏ rằng 1/101+1/102+....+1/299+1/300>2/3
chung to rang 1/101+1/102+...+1/299+1/300>2/3