1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,3.2.1几类不同增长的函数模型,x,0.2,0.6,1.0,1.4,1.8,2.2,2.6,3.0,3.4,.,1.149,1.516,2,2.639,3.482,4.595,6.063,8,10.556,0.04,0.36,1,1.96,3.24,4.84,6.76,9,11.56,-2.322,-0.737,0,0.485,0.848,1.138,1.379,1.585,1.766,函数作图：,y,x,2,4,6,8,10,o,-2,-4,2,1,3,从更大的范围观察的增长情况,x,0,1,2,3,4
2、5,6,7,8,1,2,8,4,16,32,64,128,256,0,1,4,9,16,25,36,49,64,函数作图：,10,8,6,4,2,12,4,10,8,6,2,1,16,14,20,24,22,26,28,30,1,9,5,7,3,y,x,o,(,2,4,),(,4,16,),.,.,x,0,10,20,30,40,50,60,70,80,1,1024,1.05,E+06,1.07,E+09,1.10,E+12,1.13,E+15,1.15,E+18,1.18,E+21,1.21,E+24,0,100,400,900,1600,2500,3600,4900,6400,图,3.2
3、6,1.10,E+12,1.13,E+15,50,100,y,x,某种计算机病毒是通过电子邮件进行传播的,如果某台计算机感染上这种病毒,那么每轮病毒发作时,这台计算机都可能感染其他没感染的,20,台计算机,.,练习,现有,10,台计算机在第,1,轮病毒发作时被感染,问在第,5,轮病毒发作是可能有多少台计算机被感染,?,答 案,:,1 6 0,万 台,!,某公司为了实现,1000,万元利润的目标,准备制定一个激励销售部门的奖励方案,:,在销售利润达到,10,万元时,按销售利润进行奖励,且奖金,y,(,单位,:,万元,),随销售利润,x,(,单位,:,万元,),的增加而增加,但,奖金总数不超过,5,万元,同时奖金不超过利润,25%,现在有三个奖励模型,:,函数做图,:,800,200,400,600,1000,1200,图象,-20,1200,1100,1000,900,800,700,600,500,400,300,200,100,-40,-60,-80,-100,-120,-140,-160,-180,-200,-220,-240,-260,-280,-300,
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