Unformatted text preview: y = f ( x ) = √ r 2x 2 (see ﬁgure 1.6 ). The domain of this function is the interval [r, r ], i.e., x must be betweenr and r (including the endpoints). If x is outside of that interval, then r 2x 2 is negative, and we cannot take the square root. In terms of the graph, this just means that there are no points on the curve whose xcoordinate is greater than r or less thanr .r r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 1.6 Upper semicircle y = √ r 2x 2...
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 Spring '07
 JonathanRogawski
 Math, Calculus, ........., Complex number

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