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概率是高中数学的重要内容,这部分内容考点多,分值高,历来是高考重点考查内容。近年来,高考中涌现出不少与概率交汇的精彩考题,这类题往往综合性较强,考查力度大,体现出高考在知识网络交汇处命题的思路。下面以2015年的高考题和模拟题为例,帮助同学们归纳总结,供大家学习时参考。一、与函数交汇例1(2015年吉林省长春市三模)已知a∈{-2,0,1,3,4},b∈{1,2},贝则函数f(x)=(a~2-2)x+b为增函数的概率是()
Probability is an important part of high school mathematics, this part of the test sites and more points high, has always been the key test of the college entrance examination content. In recent years, college entrance examination emerged a lot of wonderful questions and probability intersection, these questions are often more comprehensive, test intensity, reflects the college entrance examination knowledge network intersection proposition ideas. The following 2015 college entrance examination questions and simulation questions, for example, to help students summed up for your reference when learning. First, with the intersection of function and Example 1 (Changchun City, Jilin Province in 2015 three-mode) known a ∈ {-2,0,1,3,4}, b ∈ {1,2}, shellfish function f (x) = (a ~ 2-2) x + b is the probability of increasing function is ()