x- 3x-5/5≥2(10-x)/7 -1
x- 3x-5/5≥2(10-x)/7 -1
数学人气:846 ℃时间:2020-02-03 05:05:20
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练习:求函数y=(10x 10-x)/(10x-10-x)的B.[-7,+∞] C.[0,+∞) D.[-5,+例5求函数y=(3x 2)/(x 1)的值域.点拨:
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