Parametrizing a Line Integral: Finding the Easiest Approach

Click For Summary
SUMMARY

The discussion focuses on parameterizing a line integral for the closed curve C that bounds the lines y=0, x=2, and y²=8x. It establishes that multiple parameterizations exist, emphasizing the importance of selecting different velocities for the parameterization. Specific examples provided include x(t) = (t, 0) for 0 ≤ t ≤ 1 and x(t) = (2t, 0) for 0 ≤ t ≤ 1/2, demonstrating various approaches to achieve the same line segment between (0, 0) and (1, 0). The discussion concludes that parameterizing each part of the curve separately is the most effective method.

PREREQUISITES
  • Understanding of line integrals in calculus
  • Familiarity with parameterization techniques
  • Knowledge of curves and their equations, specifically y=0, x=2, and y²=8x
  • Basic grasp of velocity concepts in mathematical contexts
NEXT STEPS
  • Research different methods of parameterizing curves in calculus
  • Learn about the implications of choosing various velocities in parameterization
  • Explore examples of line integrals in multivariable calculus
  • Study the relationship between parameterization and the direction of integration
USEFUL FOR

Students and professionals in mathematics, particularly those studying calculus and line integrals, as well as educators seeking to enhance their teaching methods in parameterization techniques.

hawaiifiver
Messages
55
Reaction score
1
How do you work out the parameterization for a line integral. I have this example, and the closed curve C bounds the lines y=0, x=2 and y^2 = 8x. In the solution to the problem it states that there are many parameterizations available. So I just wanted to know, how do you work out the parameterization?
 
Physics news on Phys.org
The easiest way is to parametrize each part separately.
The "many parametrizations" probably refers to the fact that you can choose many different "velocities", e.g.
x(t) = (t, 0) ([itex]0 \le t \le 1[/itex])
x(t) = (2t, 0) ([itex]0 \le t \le 1/2[/itex])
x(t) = (t2, 0) ([itex]0 \le t \le 1[/itex])
x(t) = (t/2, 0) ([itex]0 \le t \le 2[/itex])
x(t) = (1 - t, 0) ([itex]0 \le t \le 1[/itex])
all parametrize the line segment between (0, 0) and (1, 0) (although the direction of the latter is reversed).
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
4K
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 14 ·
Replies
14
Views
2K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 2 ·
Replies
2
Views
1K
Replies
12
Views
2K