Question

 so sanh

a)-2021/2020 va 1/2

b)2022/2021 va 2021/2020

 

Answer 1

a ) <

b ) <

Answer 2

-2021/2020<1/2

Answer 3

a)2022/2021<2021/2020

Answer 4

`a)`

`-(2021)/(2020)<0`

`(1)/(2)>0`

`->(1)/(2)> -(2021)/(2020)`

`b)`

`(2022)/(2021)=1+(1)/(2021)`

`(2021)/(2020)=1+(1)/(2020)`

Vì `(1)/(2021)<(1)/(2020)`

`->1+(1)/(2021)<1+(1)/(2020)`

`->(2022)/(2021)<(2021)/(2020)`

Answer 5

a: \(-\dfrac{2021}{2020}< 0\)

\(0< \dfrac{1}{2}\)

Do đó: \(-\dfrac{2021}{2020}< \dfrac{1}{2}\)

b: \(\dfrac{2022}{2021}=1+\dfrac{1}{2021}\)

\(\dfrac{2021}{2020}=1+\dfrac{1}{2020}\)

mà \(\dfrac{1}{2021}< \dfrac{1}{2020}\)

nên \(\dfrac{2022}{2021}< \dfrac{2021}{2020}\)