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Unformatted text preview: x is horizontal. (2) If a particle moves along the graph of y = sin(2 x ) + sec( x ) so that its xcoordinate is decreasing at a rate of 3 m/s , how fast is its ycoordinate changing when x = / 3? (3) If a ash light is located on the ground 10 m from a building and shines a light on a man who is 2m tall and walks towards the building at a speed of . 2 m/s , how fast is the length of his shadow on the wall of the building changing when he is 3m from the building? (4) Find y if x 2 + y 2 = cos( xy ). (5) Find y if y = x 2 +1 x 21 . Simplify your answer....
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 Fall '07
 Department
 Calculus

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