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Describe the Motion of a Particle with Position (x,y)( x , y )

Question 27

Multiple Choice

Describe the motion of a particle with position (x,y) ( x , y ) as t varies in the given interval 0t2π0 \leq t \leq 2 \pi . x=8sint,y=5costx = 8 \sin t , y = 5 \cos t


A) Moves once counterclockwise along the circle x2+y2=1x ^ { 2 } + y ^ { 2 } = 1 starting and ending at (0,5) ( 0 , - 5 ) .
B) Moves once counterclockwise along the ellipse x264+y225=1\frac { x ^ { 2 } } { 64 } + \frac { y ^ { 2 } } { 25 } = 1 starting and ending at (0,5) ( 0,5 ) .
C) Moves once counterclockwise along the ellipse x25+y28=1\frac { x ^ { 2 } } { 5 } + \frac { y ^ { 2 } } { 8 } = 1 starting and ending at (5,0) ( - 5,0 ) .
D) Moves once clockwise along the ellipse x264+y225=1\frac { x ^ { 2 } } { 64 } + \frac { y ^ { 2 } } { 25 } = 1 starting and ending at (0,5) ( 0,5 ) .
E) Moves once clockwise along the circle (8x) 2+(5y) 2=1( 8 x ) ^ { 2 } + ( 5 y ) ^ { 2 } = 1 starting and ending at (0,5) ( 0,5 ) .

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