A={x|log1/2(3-x)≥-2}已知集合A={x| log 1/2(3-x)≥-2},集合B={x|(x-a)(x-3a)< 0},若A∩B=∅,求实数a的取值范围.1/2是底!
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![A={x|log1/2(3-x)≥-2}已知集合A={x| log 1/2(3-x)≥-2},集合B={x|(x-a)(x-3a)< 0},若A∩B=∅,求实数a的取值范围.1/2是底!](/uploads/image/z/6877142-62-2.jpg?t=A%3D%7Bx%7Clog1%2F2%283-x%29%E2%89%A5-2%7D%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%7C+log+1%2F2%283-x%29%E2%89%A5-2%7D%2C%E9%9B%86%E5%90%88B%3D%7Bx%7C%EF%BC%88x-a%EF%BC%89%EF%BC%88x-3a%EF%BC%89%EF%BC%9C+0%7D%2C%E8%8B%A5A%E2%88%A9B%3D%26%238709%3B%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.1%2F2%E6%98%AF%E5%BA%95%21)
A={x|log1/2(3-x)≥-2}已知集合A={x| log 1/2(3-x)≥-2},集合B={x|(x-a)(x-3a)< 0},若A∩B=∅,求实数a的取值范围.1/2是底!
A={x|log1/2(3-x)≥-2}
已知集合A={x| log 1/2(3-x)≥-2},集合B={x|(x-a)(x-3a)< 0},若A∩B=∅,求实数a的取值范围.
1/2是底!
A={x|log1/2(3-x)≥-2}已知集合A={x| log 1/2(3-x)≥-2},集合B={x|(x-a)(x-3a)< 0},若A∩B=∅,求实数a的取值范围.1/2是底!
log1/2(3-x)>=-2推出
log1/2(3-x)>=log1/2(4)
所以3-x=-1
A={x|x>=-1}
当a>0时,B={x|a
log1/2(x+2)+log1/2X>=-3
函数y=log1/2(log1/3^x)的定义域
已知f(x)=log1/4x+log1/4x+5,A={x|2^(x^2-6x+8)
设A={x|2^|x-1|log1/2(2x+3)}求A∩B
集合A={x|log1/2(x)
log1/2x
x²+9≥9所以log1/3(x²+9)≤log1/3(9)=-2;
log1/2(x-2/x)≥0,
log1/2^x≥2,求x?
log1/2(9^(x-1)-5)=log1/2(3(x-1)-2)-2
已知函数f(x)=log1/2(a^2-3a+3)^x,判断函数奇偶性
y=log1/2(x^2-2x+3)
log1/2(x²-2x-3)>=1/32,
解方程 log2(x-3)-log1/2(x)=2
log1/3 3 =2log2 x 求x
(1/2)^x=log1/3(x),
若集合A={x|log1/2(x)≥2},则CRA=
若集合A={x|log1/2x≥1/2}则CuA=?