实数a在【-1,1】范围内,实数b在【-1,1】范围内,则a,b 满足|a-2b|小于等于2的概率为?典型的几何概型实数a,b属于[-1,1]不妨将a看成y,b看成x|a-2b|≤2即|y-2x|≤2-2≤y-2x≤2y-2x-2≤0y-2x+2≥0表示如图向左
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![实数a在【-1,1】范围内,实数b在【-1,1】范围内,则a,b 满足|a-2b|小于等于2的概率为?典型的几何概型实数a,b属于[-1,1]不妨将a看成y,b看成x|a-2b|≤2即|y-2x|≤2-2≤y-2x≤2y-2x-2≤0y-2x+2≥0表示如图向左](/uploads/image/z/1805565-21-5.jpg?t=%E5%AE%9E%E6%95%B0a%E5%9C%A8%E3%80%90-1%2C1%E3%80%91%E8%8C%83%E5%9B%B4%E5%86%85%2C%E5%AE%9E%E6%95%B0b%E5%9C%A8%E3%80%90-1%2C1%E3%80%91%E8%8C%83%E5%9B%B4%E5%86%85%2C%E5%88%99a%2Cb+%E6%BB%A1%E8%B6%B3%7Ca-2b%7C%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8E2%E7%9A%84%E6%A6%82%E7%8E%87%E4%B8%BA%3F%E5%85%B8%E5%9E%8B%E7%9A%84%E5%87%A0%E4%BD%95%E6%A6%82%E5%9E%8B%E5%AE%9E%E6%95%B0a%EF%BC%8Cb%E5%B1%9E%E4%BA%8E%5B-1%2C1%5D%E4%B8%8D%E5%A6%A8%E5%B0%86a%E7%9C%8B%E6%88%90y%2Cb%E7%9C%8B%E6%88%90x%7Ca-2b%7C%E2%89%A42%E5%8D%B3%7Cy-2x%7C%E2%89%A42-2%E2%89%A4y-2x%E2%89%A42y-2x-2%E2%89%A40y-2x%2B2%E2%89%A50%E8%A1%A8%E7%A4%BA%E5%A6%82%E5%9B%BE%E5%90%91%E5%B7%A6)
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