一道线性规划题目,算起来和答案不一样设区域A{cosθ≤x≤2cosθ;sinθ≤y≤2sinθ}(θ∈R),点P(x,y)是A中一点,M是圆C(x+3)²+(y+3)²=1上,则|PM|的最小值是多少?我算出来是(3又根号2-3
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![一道线性规划题目,算起来和答案不一样设区域A{cosθ≤x≤2cosθ;sinθ≤y≤2sinθ}(θ∈R),点P(x,y)是A中一点,M是圆C(x+3)²+(y+3)²=1上,则|PM|的最小值是多少?我算出来是(3又根号2-3](/uploads/image/z/14791969-1-9.jpg?t=%E4%B8%80%E9%81%93%E7%BA%BF%E6%80%A7%E8%A7%84%E5%88%92%E9%A2%98%E7%9B%AE%2C%E7%AE%97%E8%B5%B7%E6%9D%A5%E5%92%8C%E7%AD%94%E6%A1%88%E4%B8%8D%E4%B8%80%E6%A0%B7%E8%AE%BE%E5%8C%BA%E5%9F%9FA%7Bcos%CE%B8%E2%89%A4x%E2%89%A42cos%CE%B8%EF%BC%9Bsin%CE%B8%E2%89%A4y%E2%89%A42sin%CE%B8%7D%EF%BC%88%CE%B8%E2%88%88R%EF%BC%89%2C%E7%82%B9P%EF%BC%88x%2Cy%EF%BC%89%E6%98%AFA%E4%B8%AD%E4%B8%80%E7%82%B9%2CM%E6%98%AF%E5%9C%86C%EF%BC%88x%2B3%EF%BC%89%26%23178%3B%2B%EF%BC%88y%2B3%EF%BC%89%26%23178%3B%3D1%E4%B8%8A%2C%E5%88%99%7CPM%7C%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E6%88%91%E7%AE%97%E5%87%BA%E6%9D%A5%E6%98%AF%EF%BC%883%E5%8F%88%E6%A0%B9%E5%8F%B72-3)
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