证明:方程x4-4x-2=0在区间[_1,2]内至少有两个实数解(1/2)补充:1.关于x的方程mx2+2(m+3)x+2m+14=0有两实根,且一个大于4,一个小于4,求m的取值范围 (2/2) 2.若方程x2+(k-2)x+2k-1=0的两根中,一根在0和1之
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![证明:方程x4-4x-2=0在区间[_1,2]内至少有两个实数解(1/2)补充:1.关于x的方程mx2+2(m+3)x+2m+14=0有两实根,且一个大于4,一个小于4,求m的取值范围 (2/2) 2.若方程x2+(k-2)x+2k-1=0的两根中,一根在0和1之](/uploads/image/z/314413-61-3.jpg?t=%E8%AF%81%E6%98%8E%EF%BC%9A%E6%96%B9%E7%A8%8Bx4-4x-2%3D0%E5%9C%A8%E5%8C%BA%E9%97%B4%5B_1%2C2%5D%E5%86%85%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E8%A7%A3%281%2F2%29%E8%A1%A5%E5%85%85%EF%BC%9A1.%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8Bmx2%2B2%28m%2B3%29x%2B2m%2B14%3D0%E6%9C%89%E4%B8%A4%E5%AE%9E%E6%A0%B9%EF%BC%8C%E4%B8%94%E4%B8%80%E4%B8%AA%E5%A4%A7%E4%BA%8E4%EF%BC%8C%E4%B8%80%E4%B8%AA%E5%B0%8F%E4%BA%8E4%2C%E6%B1%82m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4+%282%2F2%29+2.%E8%8B%A5%E6%96%B9%E7%A8%8Bx2%2B%28k-2%29x%2B2k-1%3D0%E7%9A%84%E4%B8%A4%E6%A0%B9%E4%B8%AD%EF%BC%8C%E4%B8%80%E6%A0%B9%E5%9C%A80%E5%92%8C1%E4%B9%8B)
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