已知p:方程x
2+mx+1=0有两个不等的负实根,q:方程4x
2+4(m-2)x+1=0无实根.若p或q为真,p且q为假.求实数m的取值范围.
考点分析:
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=3.
(1)求△ABC的面积;
(2)若c=1,求a的值.
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已知等比数列{a
n}满足a
n>0,n=l,2,…,且a
5•a
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3+…+log
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设a>0,b>0,若
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是3
a与3
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的最小值是
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若x
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