集合{(x,y)/(x-rcosθ)²+(y-rsinθ)²≤1},其中0≤r≤1,0≤θ≤π,对应图形的面积为2+5/2π,
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![集合{(x,y)/(x-rcosθ)²+(y-rsinθ)²≤1},其中0≤r≤1,0≤θ≤π,对应图形的面积为2+5/2π,](/uploads/image/z/8636470-70-0.jpg?t=%E9%9B%86%E5%90%88%EF%BD%9B%EF%BC%88x%2Cy%EF%BC%89%2F%EF%BC%88x-rcos%CE%B8%EF%BC%89%26%23178%3B%2B%EF%BC%88y-rsin%CE%B8%29%26%23178%3B%E2%89%A41%EF%BD%9D%2C%E5%85%B6%E4%B8%AD0%E2%89%A4r%E2%89%A41%2C0%E2%89%A4%CE%B8%E2%89%A4%CF%80%2C%E5%AF%B9%E5%BA%94%E5%9B%BE%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA2%2B5%2F2%CF%80%2C)
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集合{(x,y)/(x-rcosθ)²+(y-rsinθ)²≤1},其中0≤r≤1,0≤θ≤π,对应图形的面积为2+5/2π,
集合{(x,y)/(x-rcosθ)²+(y-rsinθ)²≤1},其中0≤r≤1,0≤θ≤π,对应图形的面积为2+5/2π,
集合{(x,y)/(x-rcosθ)²+(y-rsinθ)²≤1},其中0≤r≤1,0≤θ≤π,对应图形的面积为2+5/2π,
x,y在圆心为(rcosθ,rsinθ)的院内,圆心又在一个半径为1的上半圆内