at a unit-speed regular parametrised curve 3: (-7, 7)→ R² with T, N) has constant curvature k> 0. Show that its tangent vector n T(s) = cos(Ks) a + sin(Ks) b, for some a, b e R2.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 18T
icon
Related questions
Question

Please solve correct as soon as possible

A1. (a) Give an example of parametrised curve y: (0, 1) → R' which is
i. not regular; ii. regular but not unit-speed; iii. regular and unit-speed.
(b) Assume that a unit-speed regular parametrised curve ß:(-7, 7) → R? with
Frenet frame (T, N) has constant curvature k > 0. Show that its tangent vector
T is of the form T(s) = cos(ks) a + sin(xs) b, for some a, b e R?.
Deduce that |a||? = 1, ||b||2 = 1, while a b = 0. Furthermore, prove that 3 is
(part of) a circle of radius K.
%3D
%3D
Transcribed Image Text:A1. (a) Give an example of parametrised curve y: (0, 1) → R' which is i. not regular; ii. regular but not unit-speed; iii. regular and unit-speed. (b) Assume that a unit-speed regular parametrised curve ß:(-7, 7) → R? with Frenet frame (T, N) has constant curvature k > 0. Show that its tangent vector T is of the form T(s) = cos(ks) a + sin(xs) b, for some a, b e R?. Deduce that |a||? = 1, ||b||2 = 1, while a b = 0. Furthermore, prove that 3 is (part of) a circle of radius K. %3D %3D
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage