1.已知集合P=(x\x大于等于0小于等于4),Q=(y\y大于等于0小于等于2),下列关系不是从P到Q的映射的是:a、f:x—y=1/2x B、f:x—y=1/3x C、f:x—y=log2 x d、f:x—y= x^1/2http://hi.baidu.com/%D3%C0%85%C4%BF%DE%C6%FC/albu
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![1.已知集合P=(x\x大于等于0小于等于4),Q=(y\y大于等于0小于等于2),下列关系不是从P到Q的映射的是:a、f:x—y=1/2x B、f:x—y=1/3x C、f:x—y=log2 x d、f:x—y= x^1/2http://hi.baidu.com/%D3%C0%85%C4%BF%DE%C6%FC/albu](/uploads/image/z/701490-66-0.jpg?t=1%EF%BC%8E%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88P%3D%28x%5Cx%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E0%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8E4%29%2CQ%3D%28y%5Cy%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E0%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8E2%29%2C%E4%B8%8B%E5%88%97%E5%85%B3%E7%B3%BB%E4%B8%8D%E6%98%AF%E4%BB%8EP%E5%88%B0Q%E7%9A%84%E6%98%A0%E5%B0%84%E7%9A%84%E6%98%AF%EF%BC%9Aa%E3%80%81f%3Ax%E2%80%94y%3D1%2F2x+B%E3%80%81f%3Ax%E2%80%94y%3D1%2F3x+C%E3%80%81f%3Ax%E2%80%94y%3Dlog2+x+d%E3%80%81f%EF%BC%9Ax%E2%80%94y%3D+x%5E1%2F2http%3A%2F%2Fhi.baidu.com%2F%25D3%25C0%2585%25C4%25BF%25DE%25C6%25FC%2Falbu)
1.已知集合P=(x\x大于等于0小于等于4),Q=(y\y大于等于0小于等于2),下列关系不是从P到Q的映射的是:a、f:x—y=1/2x B、f:x—y=1/3x C、f:x—y=log2 x d、f:x—y= x^1/2http://hi.baidu.com/%D3%C0%85%C4%BF%DE%C6%FC/albu
1.已知集合P=(x\x大于等于0小于等于4),Q=(y\y大于等于0小于等于2),下列关系不是从P到Q的映射的是:
a、f:x—y=1/2x B、f:x—y=1/3x C、f:x—y=log2 x d、f:x—y= x^1/2
http://hi.baidu.com/%D3%C0%85%C4%BF%DE%C6%FC/album/item/592ed951e3e81410853524d1.html#
2.如果lgx=lga+3lgb-5lgc,那么 ( )
A.x=a+3b-c B. C. D.x=a+b3-c3
3.已知函数y=f(x)是偶数,当x>0时,有f(x)=x+4/x,且当x∈【-3,-1】,f(x)的值域是【n,m】
,则m-n的值是
A.-1/3 B.2/3 C.1 D.4/3
4.函数y=log2(x-x^2)的单调递增区间为
5.设奇函数f(x)的的定义域[-5,5.],在(0,5)上是减函数,又f(-2)=0,则不等式xf(x)
1.已知集合P=(x\x大于等于0小于等于4),Q=(y\y大于等于0小于等于2),下列关系不是从P到Q的映射的是:a、f:x—y=1/2x B、f:x—y=1/3x C、f:x—y=log2 x d、f:x—y= x^1/2http://hi.baidu.com/%D3%C0%85%C4%BF%DE%C6%FC/albu
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