O.K.

So, I will describe what I understood.

(1) How can I know what will happen in the part infinity?

-First I need to investigate it and it help to know if there is no

function in infinity (the

domain is not defined there).

The easy case to know what happen in infinity:

Extreme example with no domain: f = K (K = constant and f not a function)

f = x/0 etc.

And Now What I miss:

The x-value of the coordinate is growing by one unit that is one when draw the x-y coordinate.

So if the operation is get bigger I will know that the function go to infinity and it defined it by investigate.

So, I will ask what the reason to know if operations are "getting" to infinity. I have two tools:

-graph function (Calculus)

-Induction if the "function" input if Natural number (Number Theory)

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