1
vote
1answer
32 views

Finding pointwise limit

My question is where did "$1+r\cos$","$1+r\cot$" come from?
4
votes
0answers
64 views

Stokes' Theorem Example

I am reading Wade's Introduction to Analysis. One of the exercises is to show that $$ \int_{\partial M}\sum_{k=1}^n \, dx_1dx_2\cdots \hat{dx_i}\cdots dx_n $$ is equal to the volume of $M$ if $n$ is ...
1
vote
0answers
45 views

the usual examples for multi-variable integrals

well sadly in our exam our tutor is going to ask us to calculate different integrals etc. Well we're studying maths and not "being a good calculator" but in contrast to give exercises about simple ...