Exam 10: Parametric Equations and Polar Coordinates

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Find a corresponding x-y equation. Find a corresponding x-y equation.

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Find the area enclosed by the given curve. Find the area enclosed by the given curve.

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At time t = 0 seconds, a hockey puck is headed towards the "board" (the wall around the perimeter of the area of play) as shown in the figure (the view is from above the playing surface). At that same instant, a hockey player at a different position on the ice is headed straight up the ice in order to intercept the puck (see figure). The trajectories of the puck and the player are described by the following set of parametric equations: At time t = 0 seconds, a hockey puck is headed towards the board (the wall around the perimeter of the area of play) as shown in the figure (the view is from above the playing surface). At that same instant, a hockey player at a different position on the ice is headed straight up the ice in order to intercept the puck (see figure). The trajectories of the puck and the player are described by the following set of parametric equations:   Find the location(s) of intersection of the trajectories of the player and the puck. Distances are in feet and time is in seconds.   [figure is not necessarily drawn to scale] Find the location(s) of intersection of the trajectories of the player and the puck. Distances are in feet and time is in seconds. At time t = 0 seconds, a hockey puck is headed towards the board (the wall around the perimeter of the area of play) as shown in the figure (the view is from above the playing surface). At that same instant, a hockey player at a different position on the ice is headed straight up the ice in order to intercept the puck (see figure). The trajectories of the puck and the player are described by the following set of parametric equations:   Find the location(s) of intersection of the trajectories of the player and the puck. Distances are in feet and time is in seconds.   [figure is not necessarily drawn to scale] [figure is not necessarily drawn to scale]

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Identify a range of values of Identify a range of values of   that produces one copy of the graph.  that produces one copy of the graph. Identify a range of values of   that produces one copy of the graph.

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Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.) Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.)    Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.)

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Find all points of intersection of the two curves. Find all points of intersection of the two curves.

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A medical procedure called shockwave lithotripsy is used to break up kidney stones that are too large or irregular to be passed. In this procedure, shockwaves emanating from a transducer located at the other focus. Suppose that the reflector is described by the equation A medical procedure called shockwave lithotripsy is used to break up kidney stones that are too large or irregular to be passed. In this procedure, shockwaves emanating from a transducer located at the other focus. Suppose that the reflector is described by the equation   (in units of inches), how far from the kidney stone should the transducer be placed? (in units of inches), how far from the kidney stone should the transducer be placed?

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Graph the conic section with focus Graph the conic section with focus   and the given directrix and eccentricity. Directrix    and the given directrix and eccentricity. Directrix Graph the conic section with focus   and the given directrix and eccentricity. Directrix    Graph the conic section with focus   and the given directrix and eccentricity. Directrix

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Find the area of the indicated region. One leaf of Find the area of the indicated region. One leaf of

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Find the rectangular representation of the given polar point. Find the rectangular representation of the given polar point.

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Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.) Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.)    Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.)

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Which graph below corresponds to the given parametric equations? Which graph below corresponds to the given parametric equations?

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Find rectangular coordinates for the given polar point. Find rectangular coordinates for the given polar point.

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Find a polar equation for the conic section with focus Find a polar equation for the conic section with focus   and the given directrix and eccentricity. Directrix    and the given directrix and eccentricity. Directrix Find a polar equation for the conic section with focus   and the given directrix and eccentricity. Directrix    Find a polar equation for the conic section with focus   and the given directrix and eccentricity. Directrix

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Find the rectangular representation of the given polar point. Find the rectangular representation of the given polar point.

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Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.) r = 2 Sketch the graph of the polar equation. (Find a corresponding x-y equation if it helps.) r = 2

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Find the slope of the tangent line to the given curve at the indicated point. Find the slope of the tangent line to the given curve at the indicated point.

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Find the vertices, foci, and directrices of the given hyperbola. Find the vertices, foci, and directrices of the given hyperbola.

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Use a CAS or graphing calculator to sketch the plane curve defined by the given parametric equations. Use a window size of [-5, 5] by [-5, 5]. Use a CAS or graphing calculator to sketch the plane curve defined by the given parametric equations. Use a window size of [-5, 5] by [-5, 5].

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Which graph below corresponds to the given parametric equations? Which graph below corresponds to the given parametric equations?

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