当前位置:首页>文档>4.5.3函数模型的应用练习(2)(原卷板)_E015高中全科试卷_数学试题_必修1_02.同步练习_2.同步练习(第二套)_同步练习配套人教A版数学_第4章指数函数与对数函数_4.5.3函数模型的应用

4.5.3函数模型的应用练习(2)(原卷板)_E015高中全科试卷_数学试题_必修1_02.同步练习_2.同步练习(第二套)_同步练习配套人教A版数学_第4章指数函数与对数函数_4.5.3函数模型的应用

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4.5.3函数模型的应用练习(2)(原卷板)_E015高中全科试卷_数学试题_必修1_02.同步练习_2.同步练习(第二套)_同步练习配套人教A版数学_第4章指数函数与对数函数_4.5.3函数模型的应用
4.5.3函数模型的应用练习(2)(原卷板)_E015高中全科试卷_数学试题_必修1_02.同步练习_2.同步练习(第二套)_同步练习配套人教A版数学_第4章指数函数与对数函数_4.5.3函数模型的应用
4.5.3函数模型的应用练习(2)(原卷板)_E015高中全科试卷_数学试题_必修1_02.同步练习_2.同步练习(第二套)_同步练习配套人教A版数学_第4章指数函数与对数函数_4.5.3函数模型的应用

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4.5.3 函数模型的应用 (用时45分钟) 【选题明细表】 基础巩固 1.某公司为了适应市场需求对产品结构做了重大调整,调整后初期利润增长迅速,后来增长越来越慢, 若要建立恰当的函数模型来反映该公司调整后利润y与时间x的关系,可选用( ) (A)一次函数 (B)二次函数 (C)指数型函数 (D)对数型函数 2.如图所示的是某池塘中的浮萍蔓延的面积y(m2)与时间t(月)的关系:y=at,有以下叙述: ①这个指数函数的底数是2; ②第5个月时,浮萍的面积就会超过30 m2; ③浮萍从4 m2蔓延到12 m2需要经过1.5个月; ④浮萍每个月增加的面积都相等. 其中正确的是( ) (A)① (B)①② (C)②③④ (D)①②④ 3. 2011年12月,某人的工资纳税额是245元,若不考虑其他因素,则他该月工资收入为( ) 级数 全月应纳税所得额 税率(%) 1 不超过1 500元 3 2 1 500~4 500元 10 注:本表所称全月应纳税所得额是以每月收入额减去3 500元(起征点)后的余额. (A)7 000元 (B)7 500元 (C)6 600元 (D)5 950元 4.加工爆米花时,爆开且不糊的粒数占加工总粒数的百分比称为“可食用率”,在特定条件下,可食 用率P与加工时间t(单位:分钟)满足函数关系P=at2+bt+c(a,b,c是常数),如图记录了三次实验数 据,根据上述函数模型和实验数据,可得到最佳加工时间为( )(A)3.50分钟 (B)3.75分钟 (C)4.00分钟 (D)4.25分钟 5.在某种新型材料的研制中,实验人员获得了下列一组实验数据:现准备用下列四个函数中的一个近 似地表示这些数据的规律,其中最接近的一个是( ) x 1.992 3 4 5.15 6.126 y 1.517 4.041 8 7.5 12 18.01 (A)y=2x-2 (B)y= (x2-1) (C)y=logx (D)y=lo x 2 6.某汽车在同一时间内速度v(单位:km/h)与耗油量Q(单位:L)之间有近似的函数关系Q=0.002 5v2- 0.175v+4.27,则车速为 km/h时,汽车的耗油量最少. 7.一个驾驶员喝了少量酒后,血液中的酒精含量迅速上升到0.3 mg/mL,在停止喝酒后,血液中的酒精 含量以每小时25%的速度减少,为了保障交通安全,根据有关规定:驾驶员血液中的酒精含量不得超过 0.2 mg/mL,那么这个驾驶员至少要经过 小时才能开车(结果精确到1小时,参考数据lg 2≈0.30,lg 3≈0.48). 8.如图所示,已知边长为8 m的正方形钢板有一个角被锈蚀,其中AE=4 m,CD=6 m.为了合理利用这块 钢板,将在五边形ABCDE内截取一个矩形块BNPM,使点P在边DE上. (1)设MP=x m,PN=y m,将y表示成x的函数,求该函数的解析式及定义域; (2)求矩形BNPM面积的最大值. 能力提升 9.某地为了抑制一种有害昆虫的繁殖,引入了一种以该昆虫为食物的特殊动物,已知该动物的繁殖数 量y(单位:只)与引入时间x(单位:年)的关系为y=alog(x+1),若该动物在引入一年后的数量为100只,则 2 第7年它们发展到( ) A.300只 B.400只 C.600只 D.700只10.某工厂生产某产品x吨所需费用为P元,而卖出x吨的价格为每吨Q元,已知P=1 000+5x+ x2,Q=a+ ,若生产出的产品能全部卖出,且当产量为150吨时利润最大,此时每吨的价格为40元,则有( ) A.a=45,b=-30 B.a=30,b=-45 C.a=-30,b=45 D.a=-45,b=-30 11.有甲、乙两种商品,经营销售这两种商品所能获得的利润依次为Q 万元和Q 万元,它们与投入的 1 2 资金x万元的关系是Q= x,Q = .今年有3万元资金投入使用,则对甲、乙两种商品如何投资才能 1 2 获得最大利润? 素养达成 12.某市居民自来水收费标准如下:每户每月用水不超过4吨时,每吨为1.80元,当用水超过4吨时, 超过部分每吨3.00元.某月甲、乙两户共交水费y元,已知甲、乙两户该月用水量分别为5x吨、3x 吨. (1)求y关于x的函数; (2)若甲、乙两户该月共交水费26.4元,分别求出甲、乙两户该月的用水量和水费.
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  1. CONNECT:[ UseTime:0.000667s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000539s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000250s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000721s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000440s ]
  6. SELECT * FROM `set` [ RunTime:0.000195s ]
  7. SHOW FULL COLUMNS FROM `wendang` [ RunTime:0.000591s ]
  8. SELECT * FROM `wendang` WHERE `id` = 232426 LIMIT 1 [ RunTime:0.000374s ]
  9. UPDATE `wendang` SET `liulancishu` = 5 WHERE `id` = 232426 [ RunTime:0.003040s ]
  10. UPDATE `wendang` SET `lasttime` = 1772325085 WHERE `id` = 232426 [ RunTime:0.000889s ]
  11. SELECT * FROM `wendang` WHERE `id` < 232426 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000423s ]
  12. SELECT * FROM `wendang` WHERE `id` > 232426 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000387s ]
  13. SELECT * FROM `wendang` WHERE `id` <> 232426 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001202s ]
  14. SELECT * FROM `wendang` WHERE `id` <> 232426 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001245s ]
  15. SELECT * FROM `wendang` WHERE `id` <> 232426 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001219s ]
0.111598s