炎德文化数学2024年普通高等学校招生全国统一考试考前演练一答案
三、填空题:本题共4小题,每小题5分,共20分.13.函数f(w)=ln(x+1)+e在x=0处的切线方程为2x-y+1≥014.在学雷锋志愿活动中,安排4名志愿者完成5项工作,每人至少完...
三、填空题:本题共4小题,每小题5分,共20分.13.函数f(w)=ln(x+1)+e在x=0处的切线方程为2x-y+1≥014.在学雷锋志愿活动中,安排4名志愿者完成5项工作,每人至少完...
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高考模拟信息卷易求得C(0v区.0,D2,0P0数学·辽宁名18.(1)证明:由2cosA+2cosC-cos2B+2 sin Asin C-3,2cosA+2cosC-2cosB+1-2sin Asin C3,所以cos∠P即cos2A+cos2C-...
高一数学考试参考答案1.D【解析】本题考查平面向量的减法,考查直观想象的核心素养.AC-BC=AB-DC.2.C【解析】本题考查复数的运算,考查数学运算的核心素养,因为a...
10.Which of the following can better keep your brain healthy according to the author?A.Playing games online.B.Using smart phone regularly.C.Trying som...
本期《选修性必修第三册综合测试题(二)》参考答案一、1.CC3.D4.B5.A6.C7.A8.C二、9.AD10.AC11.AD12.ABD三、13.664.-5615是:516.18四、17.(1)36个;(2)36个;(...
21.(本小题满分12分)已知函数f()=cosx+a(V1+sinx+W1-sinx),其(1)设t1+sinx+√-sinx,求t的取值范围,并把f(x)表示为t的函数g(,:(2)求函数f(x)的最大值(可以用a表...
故交点P的坐标为(0,0).19.解:1)因为线1过点P(-1,2),且倾斜角为,所以直线1的参数方程为x=-1+tcos2π(t为参数),即直线1的参数方程为(t为参数).因为圆C的y=2+tsin...
①根据坐标系可知,A,(0,1).A(1,2),A(2,3):……(5分②由①可知,点An的坐标为(n-1,n),∴.A22:的坐标为(2022,2023).……(8分》五、(本大题共2小题,每小题10分,满分20分...
全国100所名枝最新高考得纵示他唇most possible in suburban areas,she says,where there is sufficient space to install heat recycling systems to help meet...
因为四边形ABCD为平行四边形所以D=CB,∠A=∠CLAED=∠CFB.在△ADb和△CF中,{∠A=∠C,AD=CB,所以△ADE≌△CBF(AAS).(2)因为四边形ABCD为平行四边形,所以CD∥AB.所以∠C1DE+∠D...
■■■口■口x2-1>0,x2-1<0,由f'(x)>0得或e*-1>0e*-1<0,解得X>1或-1<x<0,…(2分)故函数的单调递增区间为x>1或-1<x<0,…(3分)又函数的定义域为R,故单调递减区间为x<-1或...
M)<0,x>多h(e)在(+四)单调递减AMm=M-多>0且x<0时,)>0h)在(2+∞)上有唯一的零点,h0)=0,当x<0时,h()>0,g()>0,g)单调递增,当x>0时,h(x)<0,g(x)<0,g(x)单调递减...
8151600旭令94名<16.方山双塔位于台州市黄岩区九峰公园内紫云峰之巅南宋宝章阁直学士章雄飞《游九峰寺》诗20中赞道:“九峰突地三千丈,双塔攒空十二层”为了测量...
两节,满分40分)了学生,80左way to get up the mountain here than by train.正答题Opening Date:Nov.26,2022Closing Date:Apr.16,2023Flims Laax FaleraWhat p...
30.What can we infer about the prediction from paragraph 4?A.It might not be correct.C.It may be based on imagination.B.It turned out to be a fact.D.t...
SS 120.记5,为数列a,}的前n项和,且a,>0,已知a=2(I)若a=1,求数列{an}的通项公式;111(②)若S了+S<i对任意neN恒成立,求a,的取值范围。21.甲、乙、丙、丁四名选手...
此时f(x)=2sin(x+z4,令4π+kπ,0,k∈Z(·f()的对称中心是82(2)由题知g(x)=2 sin(4ox+ooz24x∈0,0,.4ox+四元+元+无ax+724244/0交又“y=g()在8上单调递减,m+作2a+2ak...
2023-2024学年第一学期九年级教学评价(一)数学参考答案一、选择题:(本题共10小题,每小题4分,满分40分)题号1345678910答案ABBDDBAD二、填空题:(本题共4小...
则Q,=3+4×号+5×(号)2++(n+2)×(2)-1,2Q,=3×2+4×(分)2+5×(2)+…+(n+2)×(2),…8分1两式相减得2Q.-3+2+(分)2+…十()”1-(m+2》×(2)°-3+兰(n+2)12X()"=4-n+42…10分所以Q...
数学周刊参考答案第6期人教八年级3版题报第⑨期期末自我评估(三)参考答案答案速览20.(1)解:如图3,AD即为所求作;-、1.A2.B3.C4.A5.D6.C7.C8.A(2)证明:因为AB...
A.SSSB.SASC.HLD.ASA7.已知一个多边形从一个顶点处只能引出4条对角线,则它是(A.五边形B.六边形C.七边形D.八边形8.如图,已知∠ABC=LDCB,AC与BD交于点O,添加一个...
得分评卷人(办z,219.(本小题12分)得分评卷人)20.(本小题12分)2盟小,小共圆本盛空,三已知函数f(x)=2 sinxcosx+2cos2x-1.。如图,在几何体ABCC,B,中,△ABC是边长...
from each to 46 a new set of wheels for the boy.Soon after, Mick,who 47 a toy business,repaired a bike for the boy's brother and built one for his sis...
A number of related causes may 48 aging.Some cells of the body have a fairly long life,but they can't be 49 when they die.As a person ages,the 50 of b...
Paragraph 2: Stephen realized his mistake and rushed home.He saw his mother standing with tears on the street.His mother said, "Where did you go?I was...
just be ratcheted up again-as high as necessary to e ensure that some students failed. The standards-and-responsibility movement is not about leaving...