16 or the half angle identities in theorem 1019 to

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Unformatted text preview: eader. 9 Numbers 1 and 2 in Example 11.5.2 are examples of ‘lima¸ons,’ number 3 is an example of a ‘polar rose,’ and c number 4 is the famous ‘Lemniscate of Bernoulli.’ 11.5 Graphs of Polar Equations 809 coordinate system, but also prepare you for what is needed in Calculus. Second, the symmetry seen in the examples is also a common occurrence when graphing polar equations. In addition to the usual kinds of symmetry discussed up to this point in the text (symmetry about each axis and the origin), it is possible to talk about rotational symmetry. We leave the discussion of symmetry to the Exercises. In our next example, we are given the task of finding the intersection points of polar curves. According to the Fundamental Graphing Principle for Polar Equations on page 796, in order for a point P to be on the graph of a polar equation, it must have a representation P (r, θ) which satisfies the equation. What complicates matters in polar coordinates is that any given point has in...
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This note was uploaded on 05/03/2013 for the course MATH Algebra taught by Professor Wong during the Fall '13 term at Chicago Academy High School.

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