## 30 Nov Weirstrass' M-Test

We shall state and prove a very important result in Real Analysis called the Weirstrass' M-Test. The statement of the theorem is give below.

Let be a sequence of positive real numbers such that for , . If the series is convergent, then is uniformly convergent on .

We prove the result as follows:

If n" />, we have the relation,

.

Since is convergent so there exists some such that,

nprime." />

The above relations imply,

It is thus clear now that is uniformly convergent on .

There are other variants of this result, which is left for a later post.

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