(a) Let C be the curve of intersection of the surfaces x^2 = 2y and 3z = xy. Find the length of C from the origin to the point (6, 18, 36).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section: Chapter Questions
Problem 39RE
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(a) Let C be the curve of intersection of the surfaces x^2 = 2y and 3z = xy. Find the length of C from the origin to the point (6, 18, 36). 4. 

(b) Let f be a continuous vector field which is parallel to the unit tangent vector at each point of a smooth curve C'. Show that f. dr L || f| ds .

(c) Let C" be a simple closed piecewise-smooth curve that lies in a plane with unit normal vector n = (a, b, c). Show that the line integral  1/2 *[(bz – cy) dx + (cx – az) dy + (ay – ba) dz]  equal to the plane area enclosed by C". 

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