微积分教学资料chapter10.ppt
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1、Chapter 10 Parametric Equations andPolar Coordinates 10.3 Polar coordinates10.3 Polar coordinates0Polar axisP(r,)rThe point o is called the poleThe point P is represented by theordered pair(r,)and r,are call-ed polar coordinates of Pis positive if measure in the cou-nterclockwise direction from the
2、po-lar axis and negative in the clockwi-se direction(r,)(-r,)The points(r,)and(-r,)lie on the same line through o and at the same distance|r|from oExample Plot the points whose polar coordinates are given524(a)(1,)(b)(2,3)(c)(2,)(d)(3,)433Solution 5(1,)4(2,3)2(2,)34(3,)3553(1,)can be written as(1,2)
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