Lecture notes Mathematics II (MATH2011A) - Calculus_Chapter_4
45 views 0 purchase
Course
Mathematics II (MATH2011A)
Institution
University Of The Witwatersrand (wits)
This document clearly describes, with detailed notes and examples, how to evaluate/solve the following:
~ Path Integrals in Scalar Fields
~ Path Integrals in Vector Fields
~ Double and Repeated Integrals
~ Enclosed Volumes
~ Change of variables in Double Integrals
~ Green's Theorem - Corolla...
9- SCALAR FIELD IS 0
2 THE PATH TALK ABOUT IS LABELLED [
.
3 THE ARC LENGTH IS DENOTED BY S .
4
INTEGRAL OVER C OF ¢ W R -1
- .
.
5 !
f. ¢cx,y ds
ONE INTERPRETATION OF WHAT THIS REPRESENTS IS :
↳ AND IF IT IS A TWO
VARIABLE FUNCTION
AS WELL !
( 3D)
}
"" " """" """" " "" "
> C IS THE PATHWAY
>
¢ IS THE HEIGHT OF
" "
SO CALLED FENCE
% TO CALCULATE THIS
THE AREA OF
FENCE , WE WOULD CALCULATE THE
PATH INTEGRAL to
•
WE DO NOT WANT TO WORK WITH S -
ARC LENGTH AS THE VARIABLE
% WE PARAMETERISE TO CHANGE VARIABLES :
SUPPOSE TOOK dt :
£"
J }
ds dt REMEMBER IN "" N " " ER ^^ " C "
=
☐ ( r (f) dt
To to MUST REPRESENT THE INITIAL
POINT OF C AND t1 THE END
£0 POINT OF C.
PARAMETER /SEE
VECTOR n
fyot
DEPENDENT ON t T
" t T
µ
IF VARIABLE AS ARC LENGTH
dr
( r(É)
= 1 To USE + VE SIGN !
dt However .
tr ARCÉÉNGTHT
If 0 IF VARIABLE t As
!
•
N§ %USEVESlGNf
IT IS EASY TO SEE IF S 1ST I -
LOOK
AT THE DIRECTION OF THE CURVE /
THE DIRECTION OF INTEGRATION
!
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Akshay101. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $19.35. You're not tied to anything after your purchase.