1.从X-Y,X+Y,X-5Y,X+5Y中任选两个,能组成X^2-DY^2(D为某一数值)的概率是多少?这题啥意思,2.在已经有5个钥匙环中放入两个钥匙,这两个钥匙相邻的概率?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 06:59:09
![1.从X-Y,X+Y,X-5Y,X+5Y中任选两个,能组成X^2-DY^2(D为某一数值)的概率是多少?这题啥意思,2.在已经有5个钥匙环中放入两个钥匙,这两个钥匙相邻的概率?](/uploads/image/z/10144919-47-9.jpg?t=1.%E4%BB%8EX-Y%2CX%2BY%2CX-5Y%2CX%2B5Y%E4%B8%AD%E4%BB%BB%E9%80%89%E4%B8%A4%E4%B8%AA%2C%E8%83%BD%E7%BB%84%E6%88%90X%5E2-DY%5E2%EF%BC%88D%E4%B8%BA%E6%9F%90%E4%B8%80%E6%95%B0%E5%80%BC%EF%BC%89%E7%9A%84%E6%A6%82%E7%8E%87%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E8%BF%99%E9%A2%98%E5%95%A5%E6%84%8F%E6%80%9D%2C2.%E5%9C%A8%E5%B7%B2%E7%BB%8F%E6%9C%895%E4%B8%AA%E9%92%A5%E5%8C%99%E7%8E%AF%E4%B8%AD%E6%94%BE%E5%85%A5%E4%B8%A4%E4%B8%AA%E9%92%A5%E5%8C%99%2C%E8%BF%99%E4%B8%A4%E4%B8%AA%E9%92%A5%E5%8C%99%E7%9B%B8%E9%82%BB%E7%9A%84%E6%A6%82%E7%8E%87%3F)
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