Learn where infinity comes from and why it is not a number, study worked examples with a function, then solve the questions step by step.
Infinity comes from the Latin word ‘Infinitas’. The word Infinitas is made up of two words in and finitas, in which in means no or not, while the root word finis of finitas means end and bounds. Thus, literally, an object and process that does not end and has no limits is called infinity. This is symbolized by ∞. Infinity is not a number in itself, it is a concept of infinity or limitlessness. On the number line, real number approaches ‘+ ∞’ to the right and ‘−∞’ to the left. But “+ ∞” and “−∞” are not exactly.