(1)方程ax^2+x-1=0至少有一个负的实根的充要条件是什么(2)已知集合A=(a,a+d,a+2d),B=(a,am,am^2),其中d不=0,m不=1,若A=B,试求d与m的值(2)不是第2问,是另外一题(1)a+d=am且a+2d=am^2或(2)a+d=am^2且a+2d=am解(1)得m=
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/29 12:02:52
![(1)方程ax^2+x-1=0至少有一个负的实根的充要条件是什么(2)已知集合A=(a,a+d,a+2d),B=(a,am,am^2),其中d不=0,m不=1,若A=B,试求d与m的值(2)不是第2问,是另外一题(1)a+d=am且a+2d=am^2或(2)a+d=am^2且a+2d=am解(1)得m=](/uploads/image/z/1627696-64-6.jpg?t=%281%29%E6%96%B9%E7%A8%8Bax%5E2%2Bx-1%3D0%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%80%E4%B8%AA%E8%B4%9F%E7%9A%84%E5%AE%9E%E6%A0%B9%E7%9A%84%E5%85%85%E8%A6%81%E6%9D%A1%E4%BB%B6%E6%98%AF%E4%BB%80%E4%B9%88%282%29%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%28a%2Ca%2Bd%2Ca%2B2d%29%2CB%3D%28a%2Cam%2Cam%5E2%29%2C%E5%85%B6%E4%B8%ADd%E4%B8%8D%3D0%2Cm%E4%B8%8D%3D1%2C%E8%8B%A5A%3DB%2C%E8%AF%95%E6%B1%82d%E4%B8%8Em%E7%9A%84%E5%80%BC%282%29%E4%B8%8D%E6%98%AF%E7%AC%AC2%E9%97%AE%2C%E6%98%AF%E5%8F%A6%E5%A4%96%E4%B8%80%E9%A2%98%281%29a%2Bd%3Dam%E4%B8%94a%2B2d%3Dam%5E2%E6%88%96%282%29a%2Bd%3Dam%5E2%E4%B8%94a%2B2d%3Dam%E8%A7%A3%EF%BC%881%EF%BC%89%E5%BE%97m%3D)
xT[SP+>!IL:L8K#ER-\Bɏɿ=9>ՙδ309mV[ )a.悢lwH99uvuHp9m*TѰKv[hh~2q;=