(A.)(13)/(9) (B.)4 (C.)(10)/(3) (D.)-(8)/(3)

例1.27 已知极限$\lim_{x\to0}\frac{\tan2x+xf(x)}{\sin x^{3}}=0$,则$\lim_{x\to0}\frac{2+f(x)}{x^{2}}=().$ (
A.)$\frac{13}{9}$ (
B.)4 (
C.)$\frac{10}{3}$ (
D.)$-\frac{8}{3}$

参考答案与解析:

相关试题

A (A.) 2(t^3+4); B (B.) 8; C (C.) -10; D (D.) 10.

A (A.) 2(t^3+4); B (B.) 8; C (C.) -10; D (D.) 10.28.单选题 积分$\int_{-\infty}^{+

  • 查看答案
  • £­7,3,4,( ),11 A、£­6;B. 7;C. 10;D. 13; -

    [试题]-7,3,4,(),11A、-6;B.7;C.10;D.13;

  • 查看答案
  • 下列不正确的是( )(1) (2)(3)(4)A.(4)B.(2)C.(1)D.(3)

    下列不正确的是( )(1) (2)(3)(4)A.(4)B.(2)C.(1)D.(3)下列不正确的是()(1)(2)(3)(4)A.(4)B.(2)C.(1)

  • 查看答案
  • (B.)2. (C.)3. (D.)4.

    (B.)2. (C.)3. (D.)4.设函数f(x)连续,给出下列四个条件 (1)$\lim_{x\to0}\frac{|f(x)|-f(0)}{x}$存在;

  • 查看答案
  • 0,3,3,6,9,5,( ) A,7 B. 6 C. 4 D.8

    [单选题]0,3,3,6,9,5,( )A.,7B. 6C. 4D.8

  • 查看答案
  • ()-|||-A.(1,3] B.[1,3)-|||-C.(0,3) D.[1,3]

    ()-|||-A.(1,3] B.[1,3)-|||-C.(0,3) D.[1,3]

  • 查看答案
  • B. dfrac {1)(2) . C. dfrac (2)(3) . D. dfrac (3)(4)

    B. dfrac {1)(2) . C. dfrac (2)(3) . D. dfrac (3)(4)

  • 查看答案
  • A.αB.α C.α D.不能确定

    A.αB.α C.α D.不能确定显著性检验中,若显著性水平为,则犯第二类错误的概率为().A.B.C.D.不能确定

  • 查看答案
  • 排球比赛中进攻限制线距离中线是()米?A.()3()B.()6()C.()9()D.()2.5

    排球比赛中进攻限制线距离中线是()米?A.()3()B.()6()C.()9()D.()2.5排球比赛中进攻限制线距离中线是()米?A.()3()B.()6()

  • 查看答案
  • 拦网技术按照参与人数可分为()种。A.()2()B.()3()C.()4()D.()5

    拦网技术按照参与人数可分为()种。A.()2()B.()3()C.()4()D.()5拦网技术按照参与人数可分为()种。A.()2()B.()3()C.()4(

  • 查看答案