1.已知正整数a,b满足4a+b=30,使得1/a+1/b取最...1.已知正整数a,b满足4a+b=30,使得1/a+1/b取最小值时的实数对(a,b)是_.2.已知命题p:方程x^2+mx+1=0有两个不等的负实根.命题q:方程4x^2+4(m-2)x+1=0无实根,若“p或q”为真,而“p且q”为假,求实数m的取值范围.
问题描述：
1.已知正整数a,b满足4a+b=30,使得1/a+1/b取最...
1.已知正整数a,b满足4a+b=30,使得1/a+1/b取最小值时的实数对(a,b)是_.
2.已知命题p:方程x^2+mx+1=0有两个不等的负实根.命题q:方程4x^2+4(m-2)x+1=0无实根,若“p或q”为真,而“p且q”为假,求实数m的取值范围.
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