How many positive roots does the equation (x+1/2)2012-x2012+2x+1/2=0 have? ____.

题目

How many positive roots does the equation (x+1/2)2012-x2012+2x+1/2=0 have? ____.


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更多“How many positive roots does the equation (x+1/2)2012-x2012+2x+1/2=0 have? ____.”相关问题
  • 第1题:

    How many different calendars does Oracle 11g support?()

    A. 22

    B. 7

    C. 6

    D. 15

    E. 2


    参考答案:B

  • 第2题:

    Click the Exhibit button. Given the information shown in the exhibit, when creating 2 DS1 circuits, how many STS ports are used on the VT1.5 matrix at Node 1 as VT circuits and how many are used after using VT tunnels?()

    A.2;0

    B.3;2

    C.3;5

    D.4;0

    E.6;0

    F.6;2


    参考答案:C

  • 第3题:

    The output of s how ip eigrp topology on Router R1 shows the following output, which is all the output related to subnet 10.11.1.0/24. How many feasible successor routes does R1 have for 10.11.1.0/24?()P 10.11.1.0/24, 2 successors, FD is 2172419via 10.1.1.2 (2172423/2 8167), Serial0/0/0.1via 10.1.1.6 (2172423/28167), Serial0/0/0.2

    A.0

    B.1

    C.2

    D.3


    参考答案:A

  • 第4题:

    How many equal valuable relation does set E process? E= {0,1,2}

    A.3

    B.4

    C.5

    D.6


    正确答案:C

  • 第5题:

    How many morphemes does the word "telecommunication" contain


    A.1

    B.2

    C.3

    D.4

    答案:C
    解析:
    考查形态学的语素知识。语素被定义为含有语义的最小的语言单位。telecommunication由前缀tele-、词干communicate和后缀-ion组成,故由3个语素组成。

  • 第6题:

    How many messages does internet Key Exchange use to negotiate SA characteristics when running inmain mode?()

    • A、3 messages
    • B、6 messages
    • C、4 messages
    • D、2 messages
    • E、5 messages

    正确答案:B

  • 第7题:

    How many messages does Internet Key Exchange use to negotiate SA characteristics when it runs inaggressive mode?()

    • A、3
    • B、4
    • C、5
    • D、2
    • E、6

    正确答案:A

  • 第8题:

    How many bits does EXP occupy in the MPLS label header?()

    • A、8
    • B、4
    • C、3
    • D、1
    • E、2

    正确答案:C

  • 第9题:

    问答题
    Mother gave Alice 30 dollars. She spends a fifth of the 30 dollars on books, a quarter of the remainder at a hairdresser’s and buys a new skirt for 10 dollars. How many dollars does she have now?

    正确答案: 8 dollars.
    解析:
    题目大意:妈妈给了艾丽丝三十美元,她用三十美元的五分之一买了书,理发花了剩下钱的四分之一,然后用十美元买了件新裙子。问现在玛丽还有多少钱?经过计算可知,她还剩下8美元。

  • 第10题:

    填空题
    How many positions does the company offer in the advertisement?____.

    正确答案: Three
    解析:
    原文指出,广告中给出了三个职位。

  • 第11题:

    单选题
    By how much does the sum of the roots of the equation (x+1) (x-3) = 0 exceed the product of its roots?
    A

    1

    B

    2

    C

    3

    D

    4

    E

    5


    正确答案: E
    解析:
    If (x+1)(x-3)=0, then x+1=0 or x-3 = 0. Hence, x = -1 or x = 3. The sum of these roots is -1+3 or 2, and their product is (-1)×(3) = -3. Since 2-(-3)=2+3=5 the sum of the roots of the equation exceeds the product of its roots by 5.

  • 第12题:

    单选题
    How many seats does the Senate of the Congress of the Unites States have?
    A

    100

    B

    345

    C

    435

    D

    534


    正确答案: A
    解析:
    国会是美国立法机构,由众议院和参议院组成;其中众议院共有435个席位,而参议院共有100个席位。

  • 第13题:

    How many bytes does an IP adress consist of?


    正确答案:
     

  • 第14题:

    How many simultaneous Telnet sessions does a Cisco router support by default?()

    A.1

    B.2

    C.3

    D.4

    E.5

    F.6


    参考答案:E

  • 第15题:

    How many children does the woman have?

    A. Two.

    B. Three.

    C. Five.


    正确答案:B

  • 第16题:

    How many liaisons of sound are there in the sentence "He bought an interesting book"?__________

    A.0
    B.1
    C.2
    D.3

    答案:C
    解析:
    考查连读。liaison意为“连音”,当一个单词后面紧跟一个以元音开头的单词时.则该单词最后原本不发音的辅音就发音,与元音连读。本句中bought all和an interesting就是这种情况,所以有两个连音。故选C。

  • 第17题:

    How many syllables does the word “syllable” have?

    A.I
    B.2
    C.3
    D.4

    答案:C
    解析:
    语言学概念的实例分析。题目考查对syllable(音节)的理解。一般情况下,一个元音就是一个音节,但是某些特定的辅音(如[b]、[d])可以和其他辅音(如[l])构成一个音节,因此middle有两个音节,虽然它只有一个元音,而syllable有两个元音,却有三个音节。

  • 第18题:

    How many simultaneous Telnet sessions does a Cisco router support by default?()

    • A、1
    • B、2
    • C、3
    • D、4
    • E、5
    • F、6

    正确答案:E

  • 第19题:

    The output of s how ip eigrp topology on Router R1 shows the following output, which is all the output related to subnet 10.11.1.0/24. How many feasible successor routes does R1 have for 10.11.1.0/24?() P 10.11.1.0/24, 2 successors, FD is 2172419 via 10.1.1.2 (2172423/2 8167), Serial0/0/0.1 via 10.1.1.6 (2172423/28167), Serial0/0/0.2

    • A、0
    • B、1
    • C、2
    • D、3

    正确答案:A

  • 第20题:

    How many different calendars does Oracle 11g support?()

    • A、 22
    • B、 7
    • C、 6
    • D、 15
    • E、 2

    正确答案:B

  • 第21题:

    问答题
    A farmer has a field containing a certain number of pigs and hens. Between them they have 36 heads and 100 feet. How many pigs and hens does the farmer have?

    正确答案: 14 pigs and 22 hens
    解析:
    假设有x头猪,y只鸡,那么可得以下方程组:
      x+y=36
      4x+2y=100
      解此方程组可得x=14,y=22。

  • 第22题:

    单选题
    How many morphemes does the wor d ”telecommunication” contain?
    A

    1

    B

    2

    C

    3

    D

    4


    正确答案: C
    解析:

  • 第23题:

    单选题
    How many positive factors do 180 and 96 have in common?
    A

    6

    B

    12

    C

    16

    D

    18

    E

    24


    正确答案: C
    解析:
    将180和96分解因式可知,相同的因子为1, 2, 3, 4, 6,12,故本题选A项。