衡水金卷先享题信息卷语文四 答案

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To be a firefighter look like a pretty cool job. And there are a lot of things you have to doto get this job. First, we must take health-training courses, and thats just a start. Then you canyactually apply for the jobs as a firefighter. After that, theres an written exam. If you pass thetest, you then have to take in a physical exam. It's really hard and a lot of people fail, Amakesure you're in good shape. Next, you go to the fire academy, in that you study for four monthswhichAt this school, you learn to becoming a firefighter. Final, you have to pass your final exam. ItsbecomeFinallytotally stressed but worth itstressful

题满分12分)g(-1)=-a b=0,得bg(x)=ax a设函数y=f(x)与函数y=g(x)相切于点(x,e),则f(x)=e由题意可得a( D.解得/50(5分)此a=1(2)由题意得m 0,函数y=(x)单调递增从而,函数y=(x)在(0, ∞)上有最小值on2)=2-2ln2>0即有h(x)>0在(0, ∞)上恒成立所以,函数y=(x)在(04 )上单调递增,故对)>9,所以m因此,实数m的取值范围是12分)