设b和c分别是先后抛掷一枚骰子得到的点数.1.求b≥3且c≤2的概率.2.求函数f(x)=x设b和c分别是先后抛掷一枚骰子得到的点数.1.求b≥3且c≤2的概率.2.求函数f(x)=x²-2bx+4c有零点概率.
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![设b和c分别是先后抛掷一枚骰子得到的点数.1.求b≥3且c≤2的概率.2.求函数f(x)=x设b和c分别是先后抛掷一枚骰子得到的点数.1.求b≥3且c≤2的概率.2.求函数f(x)=x²-2bx+4c有零点概率.](/uploads/image/z/6895229-5-9.jpg?t=%E8%AE%BEb%E5%92%8Cc%E5%88%86%E5%88%AB%E6%98%AF%E5%85%88%E5%90%8E%E6%8A%9B%E6%8E%B7%E4%B8%80%E6%9E%9A%E9%AA%B0%E5%AD%90%E5%BE%97%E5%88%B0%E7%9A%84%E7%82%B9%E6%95%B0.1.%E6%B1%82b%E2%89%A53%E4%B8%94c%E2%89%A42%E7%9A%84%E6%A6%82%E7%8E%87.2.%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%3Dx%E8%AE%BEb%E5%92%8Cc%E5%88%86%E5%88%AB%E6%98%AF%E5%85%88%E5%90%8E%E6%8A%9B%E6%8E%B7%E4%B8%80%E6%9E%9A%E9%AA%B0%E5%AD%90%E5%BE%97%E5%88%B0%E7%9A%84%E7%82%B9%E6%95%B0.1.%E6%B1%82b%E2%89%A53%E4%B8%94c%E2%89%A42%E7%9A%84%E6%A6%82%E7%8E%87.2.%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%3Dx%26%23178%3B-2bx%2B4c%E6%9C%89%E9%9B%B6%E7%82%B9%E6%A6%82%E7%8E%87.)
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