单选题When f(x) is divided by 2x + 1, the quotient is x2-x+ 4 and the remainder is 6. What is f(x)?A2x3-x2 + 9x+ 6B2x3-2x2 + 8x + 6Cx2-x + 10D2x3-x2 + 7x + 4E2x3-x2 + 7x + 10

单选题
When f(x) is divided by 2x + 1, the quotient is x2-x+ 4 and the remainder is 6. What is f(x)?
A

2x3-x2 + 9x+ 6

B

2x3-2x2 + 8x + 6

C

x2-x + 10

D

2x3-x2 + 7x + 4

E

2x3-x2 + 7x + 10


参考解析

解析:
Using the given quotient and remainder, you know that f(x)=(2x+1)(x2-x+4)+6=2x3-x2+7x+10.

相关考题:

设函数f(2x)=lnx,则f′(x)=________.

设f(x)=2x,则f″(x)=( )A.2x·ln22 B.2x·ln4C.2x·2 D.2x·4

函数f(x)=2x+3,g(x)=6x+k,且f[g(x)]=g[f(x)]则k=() A、0B、15C、10D、不存在

下列程序段的执行结果为I=1x=5DoI=I + 1x=x + 2Loop Until I =7Print "I="; IPrint "x="; x ( )。A.I=4x=5B.I=7x=15C.I=6x=8D.I=7x=17

已知函数 x(t)的傅里叶变换为 X(f),则函数 y(t)=2x(t)的傅里叶变换为( )。 A. 2X(t)B. X(t )C. X(f)D. 2X(f)

f(x)=1/3x³-2x³,则f(x)单调增加区间是() A、(-∞,0)B、(0,4)C、(4,+∞)D、(-∞,0)和(4,+∞)

下列程序段的执行结果为 i=9 x=5 Do i=i + 1 x=x + 2 Loop Until i>=7 Print "i=":i Print "x=":XA.i=4x=5B.i=7x=15C.i=6x=8D.i=10x=7

方程log13|x|=sin(π/2-1/2x)的实根的个数是( ).(A)2.(B)4.(C)6.(D)8.

下列程序段的执行结果为 I=9 X=5 Do I=I+1 x=x+2 Loop Until I >=7 Print"I=";I Print"x=";xA.I=4x=5B.I=7x=15C.I=6x=8D.I=10x=7

设f(x)是连续函数, 则f(x)=A. x2 B. x2-2 C 2x D. x2 -16/9

A. f″(x^2y) B. f′(x^2y)+x^2f″(x^2y) C. 2x[f′(x^2y)+yf″(x^2y)] D. 2x[f′(x^2y)+x^2yf″(x^2y)]

求函数.f(x)=x2?2x在x=0处的n阶导数,f(n)(O)。

设f(x)是连续函数,且,则f(x)=( )。A. x2 B. X2-2 C. 2x D. x2-16/9

A.f(2x)B.2f(x)C.f(-2x)D.-2f(x)

已知函数x(t)的傅里叶变换为X(f),则函数y(t)=2x(3t)的傅里叶变换为()A、2X(f/3)B、2/3X(f/3)C、2/3X(f)D、2X(f)

7x是指7个连续的质控值落在均值一侧,用于提示可能存在随机误差。

不可压缩流体平面流动在y方向的速度分量为uy=y2-2x+2y,根据连续性方程可知,速度在x方向的分量ux为()。A、-(2yx+2x)+f(y)B、2x(y+1)C、-(2yx+2y)+f(x)D、2x(y+1)+c

在加用滤光镜之前,拍摄某一景物时,采用的曝光组合为f/8x1/250秒,则在加用2X滤光镜后,应采用的曝光组合为()A、f/8x1/125B、f5/.6x1/25C、f/5.6x1/60D、f/8x1/60

数据业务补充业务信道SCH有2X、4X、8X、16X几种组合模式,分别对应().4种速率

单选题When a positive integer p is divided by 7, the remainder is 2. Which of the following expressions will yield a remainder of 4 when divided by 7?Ap+2Bp+3Cp+4Dp+5Ep+6.

单选题When f(x) is divided by 2x + 1, the quotient is x2-x+ 4 and the remainder is 6. What is f(x)?A2x3-x2 + 9x+ 6B2x3-2x2 + 8x + 6Cx2-x + 10D2x3-x2 + 7x + 4E2x3-x2 + 7x + 10

填空题If the function f is defined by f(x)= (2x-4)/3 for what value of x does f(x) = 18?____

单选题已知函数x(t)的傅里叶变换为X(f),则函数y(t)=2x(3t)的傅里叶变换为()A2X(f/3)B2/3X(f/3)C2/3X(f)D2X(f)

填空题数据业务补充业务信道SCH有2X、4X、8X、16X几种组合模式,分别对应().4种速率

判断题7x是指7个连续的质控值落在均值一侧,用于提示可能存在随机误差。A对B错

多选题1. class BaseClass {  2. private float x = 1.of;  3. protected float getVar() { return x; }  4. }  5. class SubClass extends BaseClass {  6. private float x = 2.Of;  7. // insert code here 8. }   Which two are valid examples of method overriding when inserted at line 7?()Afloat getVar() { return x; }Bpublic float getVar() { return x; }Cpublic double getVar() { return x; }Dprotected float getVar() { return x; }Epublic float getVar(float f) { return f; }

单选题若f′(x)为连续函数,则∫f′(2x)dx=(  )。Af(2x)+CBf(x)+CCf(2x)/2+CD2f(2x)+C

填空题k is an integer between 50 and 90 and is a multiple of 4. When k is divided by 5, the remainder is 3. When k is divided by 3, the remainder is 2. What is the value of k?____