Arc length and straight lines(Need clarification please)

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Homework Help Overview

The discussion revolves around a problem involving a parameterized curve described by a function \(\omega: I \rightarrow \mathbb{R}^3\) and its relationship with a constant velocity vector \(|v| = 1\). Participants are tasked with demonstrating an inequality involving the dot product of the difference of the curve's endpoints and the velocity vector, as well as an integral of the curve's derivative.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the implications of the fundamental theorem of calculus and the nature of the velocity vector, questioning whether it remains constant or varies directionally along the curve. There are attempts to apply the product rule and clarify the relationship between velocity and speed.

Discussion Status

Some participants have provided hints and guidance regarding the application of calculus principles, while others are seeking clarification on the relationships between the vectors involved. The discussion is ongoing, with multiple interpretations being explored, particularly concerning the nature of the velocity vector and its derivatives.

Contextual Notes

Participants are working under the constraints of a homework assignment, which requires them to show specific inequalities and relationships without providing complete solutions. There is an emphasis on clarifying definitions and assumptions related to the vectors involved.

  • #31
gabbagabbahey said:
Sure, but all you really need is

\frac{\vec{t}-\vec{s}}{|\vec{t}-\vec{s}|} \cdot (\vec{t}-\vec{s}) \leq \int_a^b ||\vec{\omega}(t)'|| dt

Hi again and one time more thank you for your reply,

What I am going to end up here just to clarify is that some of the terms on the lefthand side of inequality will eat each other and I will end up with a formula which resembles the arc-length formula?

Sincrely

Cauchy
 

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