Category: Study

Proving that sinx does not reach a limit as x approaches infinity

We have a limit of the function as x approaches infinity from the function f(x)=sinx.

We intuitively feel that the above limit does not exist. x’s are getting bigger and bigger, and the sine values ​​are constantly fluctuating between -1 and 1. But how can we formally demonstrate and prove this?

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Horizontal and oblique asymptotes of functions

The relationship between horizontal and oblique asymptotes is as follows: horizontal asymptotes are special oblique asymptotes. Therefore, every horizontal asymptote is an oblique asymptote, but not every oblique is horizontal.

This can and should be used to shorten the counting of function asymptotes.

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