42. Use Green's Theorem and or a computer algebra system to evaluate [x²ydx-xy²dy, where C is the circle x² + y²=4 with counterclockwise orientation. a. 4x b. 2x c.-8.r d. 2x e. None of these

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 61E
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41. Evaluate the line integral over the given curve C.
(9x + 3y)ds; r(t) = (t - 9)i + tj, 0 ≤ t ≤ 4.
a. -48
b. 96
c. 420√2
C.
d.-228√/2
42. Use Green's Theorem and/or a computer algebra system to evaluate
where C is the circle x² + y² =4 with counterclockwise orientation.
e [x²ydx-xy²dy,
a. 4x
b. 2x
с. -8л
d. 2x
e. None of these
43. Use Green's Theorem to evaluate the line integral along the positively oriented closed curve C.
$2xydx + 5x dy, where C is the triangle with vertices (0, 0), (2, 5) and (0, 5).
a. 40
b. 160
3
c. 800
3
d. 10
X
Page 14
Transcribed Image Text:41. Evaluate the line integral over the given curve C. (9x + 3y)ds; r(t) = (t - 9)i + tj, 0 ≤ t ≤ 4. a. -48 b. 96 c. 420√2 C. d.-228√/2 42. Use Green's Theorem and/or a computer algebra system to evaluate where C is the circle x² + y² =4 with counterclockwise orientation. e [x²ydx-xy²dy, a. 4x b. 2x с. -8л d. 2x e. None of these 43. Use Green's Theorem to evaluate the line integral along the positively oriented closed curve C. $2xydx + 5x dy, where C is the triangle with vertices (0, 0), (2, 5) and (0, 5). a. 40 b. 160 3 c. 800 3 d. 10 X Page 14
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