Order of Smallness

Rarely Tested

Order of Smallness

If:

$$f(x)=O((x-a)^n)$$

as:

$$x\to a$$

then there exists a constant $$M>0$$ such that:

$$|f(x)|\leq M|x-a|^n$$

near $$a$$.

Usage

- Used to compare the rate at which functions approach zero.

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