My Math Forum  

Go Back   My Math Forum > College Math Forum > Real Analysis

Real Analysis Real Analysis Math Forum

LinkBack Thread Tools Display Modes
December 26th, 2009, 09:33 AM   #1
Joined: Jun 2009

Posts: 83
Thanks: 1

Curve integral - expression simplification

during my computations on some curve integral I ened with this integral:

Can someone please try to simplify this formula? What I think may help (but I failed) can be: polar coordinates substitution, per partes, add and subtract some expression to the nominator, nominator looks similar to the derivation of the division (x' / y')' ...

Thank you for any ideas.

After a while I have used substitution z = (y' / x') and got:

but now I am still stucked.
honzik is offline  
December 26th, 2009, 03:16 PM   #2
Senior Member
Joined: Feb 2009
From: Adelaide, Australia

Posts: 1,519
Thanks: 3

Re: Curve integral - expression simplification

Change of variables: z' = dz/dt, so you can cancel dt and replace t1 and t2 with z(t1) and z(t2)
aswoods is offline  

  My Math Forum > College Math Forum > Real Analysis

curve, expression, integral, simplification

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
integral calculus ....... curve tracing rimi Calculus 2 July 3rd, 2013 05:08 PM
complex curve integral mhhojati Complex Analysis 10 August 8th, 2012 01:27 AM
About Zeta integral expression Dougy Complex Analysis 1 May 6th, 2012 10:42 AM
Logaritm expression simplification b2kguga Calculus 1 July 23rd, 2011 02:41 PM
Double integral..LN expression tinyone Calculus 3 November 14th, 2010 10:33 AM

Copyright © 2019 My Math Forum. All rights reserved.