Can somebody recommend me respectable Math Analysis courses online? I am a student and I took real analysis course in my university, but I am unsatisfied ...

How can you estimate f'(4). The graph of f could look like almost anything on the interval (3, 5), so any estimate is plausible. For the second quest...

I understand how to find a limit. I understand the concept of the $\epsilon$-$\delta$ definition of a limit. Can you walk me through what we're doing...

The rule say that: Limit x->Anything 0*(sin x)=0. Limit x->Anything 0*(cos x)=0. Does this apply here too? Limit x->infinity (1/x)*(|cot x|)=0. I...

To preface this post, I have to admit that I have extremely little measure theory knowledge and I get lost when trying to read about Fubini's theorem...

As described here (and as I always thought was the most general definition of boundary), a possible definition of the boundary of a subset $S$ of a topolo...

I'm so confused. I know the trivial subgroup is identity itself.

I'm taking multivariable calc this fall. I began self-studying on my own a couple months ago, using Salas's calc text. Then I stumbled on Ted Sh...

Sine is usually defined as the ratio of the opposite side to an angle to the hypotenuse in a right angle triangle. Another common definition is based on t...

How do I find the formula when I only know some data points ? Usually I just use the Trendline option for diagrams in Excel, but this one eludes me. I exp...