踏青的诗句

设函数f(x)=xsinx,则f(x)在(-∞,+∞)内为（）A、奇函数B、偶函数C、非奇非偶D、上述都不正确 函数f(x)=xsinx,x属于r（ ）已知函数f(x)=xsinx ,x属于R,则f(5/π) ,f(1) ,f(-3/π)的大小关系为（ ）．Af(-3/ π) >f(1) >f(5/π) B． f(5/π)> f(1) >f(-3/π)C．f(1)>f(-3/π)> f(5/π) D．f(-3/π)>f(5/π)>f(1) 要步骤f(1 已知函数f(x)=xsinx,x属于R,f(-4),f(4π／3),f(-5π／4)的大小关系已知f(x)的定义域为(﹣∞,﹢∞),且在其上是增函数,满足f(xy)=f(x)+f(y),f(2)=1,试解析不等式f(x)+f(x-2) f(x)=xsinx,x∈R,则f(-π/4),f(1),f(π/3)的大小关系为 已知f(x)的一个原函数为xsinx,求∫xf('x)dx是求∫xf'(x)dx 括号错了！ 已知函数f（x）＝xsinx+cosx,则f（-3）与f（2）的大小关系,用导数求 设有连续函数f(x)满足∫f(tx)dt(从0到1)=f(x)+xsinx,求f(x). 对于函数f(x),若存在x0属于R,使f(x0)=x0,则称x0为函数f(x)的不动点,已知f(x)=ax^2=(b+1)x+(b-1) (a不等于0)（1）当a=1,b=-2,求函数f(x)的不动点（2）若对任意实数,函数f(x)恒有两个相异不动点,求a的取值范 对于定义在R上的函数F(X),如果存在实数x0,使F(X0)=X0,那么X0叫做函数F(X)的一个不动点.已知函数F(X)=x^2+2ax+1不存在不动点,则a的取值范围?答案是（-0.5,1. 对于函数f(x),若存在x0使得f(x0)=x0成立,则称点(x0,x0)为函数f(x)的不动点,对于任意实数b,函数f(x)=ax^2+bx-b总有两个相异的不动点,求a的范围 对于函数f（x）=ax2+（b+1）x+b-2（a≠0）,若存在实数x0,使f（x0）=x0成立,则称x0为f（x）的不动点．（1）当a=2,b=-2时,求f（x）的不动点；（2）若对于任何实数b,函数f（x）恒有两相异的不动点,求 对于函数F(X),若存在X0＜R,使F(X0)=X0成立,则称X0为F(X)的不动点,已知函数F(X)=AX∨2 +(B+1)X+(B-1)(A≠0)1）当a=1,b=2时,求函数f(x)的不动点 2）若对任意实数b,函数恒有两个相异的不动点,求a的取值范围3 对于函数fx定义域为D若存在x0属于D是使f（X0）=X0则称（X0,XO)为fx图像上的不动点,已知函数fx=9x-5/x+3求出函数定义域和函数图像上的不动点的坐标 已知函数f(x)=x^3-x^2+x/2+1/4,证明存在x0∈(0,1/2)使f(x0)=x0 x-(9.8+3.2)=20.5 解 9 8 7 6 5 4 3 2 1=20只准用加减法 2-2^2-2^3-2^4-2^5-2^6-2^7-2^8-2^9.-2^20=?快!求详解 2-2^2-2^3-2^4-2^5-2^6-2^7-2^8-2^9.+2^20 过程 1+2+3+4+5+6+7+8+9+.+20=? 4.2 *45%+5.8 3分之2减X=9分之2 4分之5+X=2又2分之1 2X+8分之3=8分之3 X+（4分之3减10分之3）=20分之9 1+2+3+4+5+6+7+8+9+10+12+14+16+18+20=? 初一英语短文填词Last weekend ,Xiao Ming and his classmates went to the m( ).When they a( ) at the mountains,they s( ) rubbish here and there.The ground l( ) very dirty.They had a short meeting and d( ) to pick up the rubbish while they climbe 初一英语短文填词!急Kashi in the Uygur language（维吾尔语）means“a place of jade（翡翠；玉）”.It is an important _______in northeastern China.There is a saying：Without（没有）visiting Kashi City,you ______say you visited John is five years old.He has a b__1__drum.John l__2__it very much.He often strikes it at n__3__and makes much noise.One of his neighbors is very a__4__about the noise.One day,the neighbor s__5__to John,"Do you k__6__there is something very nice in y 短文填词,每空一词1is my backpack.In my 2 ,I have an English 3 .Its name 4 Go for it I have 5 baseball 6 have a pencil 7 too.In 8 pencil case I have 9 eraser a ruler a pen 10 a pencil1 .2 .3 .4 .5 .6 .7 .8 .9 .10 . ,短文填词,My name is Li Lei.Ian eleven.I an from China.My mum and dad w___1__ in a big factory.They go to work e __2___day but rest two days in a week.I have a sister.She is very nice.We l__3__ like each other very much and we like to h___4__ eac 求初一英语填词but they shake hands after they have not met for a long time or when they will be a___ from each other for a long time 急My favourite star is Jackie Chan .He is a great actor .He has a n____ movie,Speed.It's very scary action movie .I think it's exciing .Jay likes Michelle Yan best .He likes her f____ movie,Sleeoless Night. 初一英语 填词 理由 初一英语阅读理解填词Mr.Clark is very busy every year.This summer he h_____ two weeks off for his vacation .He wanted to have a good rest .So he took his f_____ to the b______.The weather there was sunny and windy .And the waves were beautif 阅读理解填词.Anna is twelve years old this year.She is quiet and she is good at p_____.Last Saturday,she had a happy Children's Day.Her parents took her to the b_____to spend her last Children's Day.They camped by the sea after they g_____there