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Infinity

On a calculator there is no key for infinity

 ∞ 

but it would be possible.

 


Exemple 1

To calculate

 0  ÷  ∞  =

 


Exemple 2

To calculate

 1  ÷  ∞  =

 


Exemple 3

Enter

 ∞  ÷  ∞  = undefined 

 


Exemple 4

To calculate 2 × ∞ = ∞

 2  ×  ∞  = ∞ 

 


Exemple 5

Enter 0 × ∞

 0  ×  ∞  = undefined 

 


Exemple 6

Enter 1

 1  yx  ∞  = undefined 

 


Exemple 7

Enter ∞ − ∞

 ∞   ∞  = undefined 

 


Exemple 8

To calculate ∞ + ∞ = ∞

 ∞  +  ∞  = ∞ 

 


Exemple 9

To calculate ∞ + 1 = ∞

 ∞  +  1  = ∞ 

 


Example 10

To calculate  ∞ − 1 = ∞

 ∞   1  = ∞ 

 


Explanation

Infinity is not a number. It is only a concept to work with. The English mathematician John Wallis introduced the symbol ∞ for infinity.

 


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