Show that r = (sin t)i + (cos t)j + V3k has a constant length. And r(t) is orthogonal to it's derivative. %3D

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Q6:- Show that r = (sin t)i + (cos t)j + v3k has a constant length. And r(t) is orthogonal to
it's derivative.
d²x
= 3 cos t and = 4 sin t. It's velocity at time
Q7:- A particle moving with acceleration
zero is 12k and it's position at time zero is 2i + j+ 4k. Find the speed at time t =", and
%3D
dt2
dt2
the particle position as a function of time.
Q8:- Find N(t) for the curve r = (e' cos t)i + (et sin t)j, use the results to find K(t).
Transcribed Image Text:Q6:- Show that r = (sin t)i + (cos t)j + v3k has a constant length. And r(t) is orthogonal to it's derivative. d²x = 3 cos t and = 4 sin t. It's velocity at time Q7:- A particle moving with acceleration zero is 12k and it's position at time zero is 2i + j+ 4k. Find the speed at time t =", and %3D dt2 dt2 the particle position as a function of time. Q8:- Find N(t) for the curve r = (e' cos t)i + (et sin t)j, use the results to find K(t).
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