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【简答题】
His third grade teacher wrote, “His mother’s death has been hard on him. He tries to do his best but his father doesn’t show much interest and his home life will soon affect him _______ .”
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【简答题】已知函数 φ(x)= a x+1 ,a为正常数. (Ⅰ)若f(x)=lnx+φ(x),且 a= 9 2 ,求函数f(x)的单调减区间; (Ⅱ)若g(x)=|lnx|+φ(x),且对任意x 1 ,x 2 ∈(0,2],x 1 ≠x 2 ,都有 g( x 2 )-g( x 1 ) x 2 - x 1 <-1 ,求a的取值范围.
【单选题】To my surprise, the manager ______ 30 dollars from my salary without any good reason.
A.
cut off
B.
held up
C.
brought down
D.
kept back
【简答题】已知函数 f(x)= 1 x +ax+lnx , g(x)= a+1 x +3lnx,(a∈R) . (I)当a=2时,求函数f(x)的单调区间; (II)若函数F(x)=f(x)-g(x)在区间[1,+∞)上单调递增,求实数a的取值范围; ( III)证明: 2 n+1 + 1 2 n ≥n(n+1)ln2+3 对任意的n∈N * 成立.
【简答题】已知函数 φ(x)= a x+1 ,a为正常数. (1)若f(x)=lnx+φ(x),且 a= 9 2 ,求函数f(x)的单调增区间; (2)若g(x)=|lnx|+φ(x),且对任意x 1 ,x 2 ∈(0,2],x 1 ≠x 2 ,都有 g( x 2 )-g( x 1 ) x 2 - x 1 <-1 ,求a的取值范围.
【简答题】设函数f(x)=lnx,g(x)=e2x+1,则f[g(x)]=______。
【单选题】The reason for my absence was ______ I had fallen ill.
A.
why
B.
because
C.
for
D.
that
【单选题】I have enjoyed my visit here. I'll be very sorry ______.
A.
for leaving
B.
to leave
C.
of leaving
D.
with leaving
【简答题】设函数f(x)=(x+a)lnx-x+a. (Ⅰ)设g(x)=f'(x),求g(x)函数的单调区间; (Ⅱ)若 a≥ 1 e ,试研究函数f(x)=(x+a)lnx-x+a的零点个数.
【简答题】已知函数 (x)= ,a是正常数。(1)若f(x)= (x)+lnx,且a= ,求函数f(x)的单调递增区间;(2)若g(x)=∣lnx∣+ (x),且对任意的x ,x ∈(0,2〕,且x ≠x ,都有 <-1,求a的取值范围
【判断题】决算是管理会计的职能之一。
A.
正确
B.
错误
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