PAGE MERGEFORMAT 5课时分层作业(十五) 函数的表示法(建议用时:60分钟)[合格基础练]一选择题1.购买某种饮料x听所需钱数为y元.若每听2元用解析法将y表示成x(x∈{1234})的函数为( )A.y2x B.y2x(x∈R)C.y2x(x∈{123…})D.y2x(x∈{1234})D [题中已给出自变量的取值范围x∈{1234}故选D.]2.已知函数yf
PAGE MERGEFORMAT 5课时分层作业(十四) 函数的概念(建议用时:60分钟)[合格基础练]一选择题1.已知函数f(x)eq f(3x)则feq blc(rc)(avs4alco1(f(1a)))( )A.eq f(1a) B.eq f(3a)C.a D.3aD [feq blc(rc)(avs4alco1(f(1a)))3a故选D.
PAGE MERGEFORMAT 4课时分层作业(二) 集合的表示(建议用时:60分钟)[合格基础练]一选择题1.已知集合A{x∈Nx<6}则下列关系式不成立的是( )A.0∈A B.1.5?AC.-1?A D.6∈AD [∵A{x∈Nx<6}{012345}∴6?A故选D.]2.把集合{xx2-3x20}用列举法表示为( )A.{x1x2} B.{xx1x2}C.{x2
9/ NUMS 9 课时分层作业(十五)Ⅰ阅读理解ASunstroke (中暑) is a condition that can quickly go from dangerous to deadly,especially if proper care isn't given immediatelySunstroke,sometimes called heatstroke,is a resu
\* MERGEFORMAT 9 课时分层作业(十五)Ⅰ阅读ADo you want to help the less fortunate around the world?Here are some charities that can help you do thatK.IDSThis large organization improves the lives of children li
PAGE MERGEFORMAT 5课时分层作业(十六) 分段函数(建议用时:60分钟)[合格基础练]一选择题1.已知函数f(x)eq blc{rc (avs4alco1(x5x≥4x-2x<4))则f(3)的值是( )A.1 B.2 C.8 D.9A [f(3)3-21.]2.函数f(x)xeq f(xx)的图象是( )A B C
PAGE MERGEFORMAT 5课时分层作业(二十一) 幂函数(建议用时:60分钟)[合格基础练]一选择题1.已知幂函数f(x)k·xα的图象过点eq blc(rc)(avs4alco1(f(12)r(2)))则kα等于( )A.eq f(12) B.1 C.eq f(32) D.2A [∵幂函数f(x)kxα(k∈Rα∈R)的图象过点eq
PAGE MERGEFORMAT 5课时分层作业(十七) 函数的单调性(建议用时:60分钟)[合格基础练]一选择题1.函数yeq f(1x)的单调递减区间是( )A.(0∞) B.(-∞0)C.(-∞0)和(0∞)D.(-∞0)∪(0∞)C [函数yeq f(1x)的定义域是(-∞0)∪(0∞).由函数的图象可知yeq f(1x)在区间(-∞0)和(0∞)上分别
PAGE MERGEFORMAT 1课时分层作业(二十二) 函数的应用(一)(建议用时:60分钟)[合格基础练]一选择题1.某厂日产手套的总成本y(元)与日产量x(双)之间的关系为y5x40 000.而手套出厂价格为每双10元要使该厂不亏本至少日产手套( )A.2 000双 B.4 000双C.6 000双 D.8 000双D [由5x40 000≤10x得x≥8 000即日产手
9/ NUMS 9 课时分层作业(十二)Ⅰ阅读理解AI picked up my two best friends and we were off on a road tripI had just returned to America from a year abroad in ,naturally I wanted to take a trip to CanadaMontreal,the
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