【简答题】设a为实数,函数f(x)=2x 2 +(x-a)|x-a|, (1)若f(0)≥1,求a的取值范围; (2)求f(x)的最小值; (3)设函数h(x)=f(x),x∈(a,+∞),直接写出(不需给出演算步骤)不等式h(x)≥1的解集。
【单选题】GQPS-386测验的主要技术指标包括信度指标、( )、难度指标等。
【单选题】During a business lunch it's important to ______.
A.
make a deal with the client
B.
order nice, expensive food
D.
inquire after the client's health
【单选题】In order to keep the balance of ecosystem, every possible means _______to deal with the problems of the over-exploiting of natural resources.
【多选题】拉伸试验过程中不必规定的选项是( ) 。
【单选题】Daring a business lunch it' s important to______.
A.
make a deal with the client
B.
order nice, expensive food
D.
inquire after the client' s health
【单选题】下列程序段的输出结果是( )。 ACCEPT TO A IF A=[123] S=0 ENDIF S=1 ?S
【简答题】设函数f(x)= 1 3 x 3 - a+1 2 x 2 +ax. (Ⅰ)函数f(x)在(11,2012)内单调递减,求a范围; (Ⅱ)若实数a满足1<a≤2,函数g(x)=4x 3 +3bx 2 -6(b+2)x(b∈R)的极小值点与f(x)的极小值点相同,求证:g(x)的极大值小于等于10.
【单选题】According to Xiao Wei, the first thing Shanghai has to deal with is human capital in order to keep its leading position in development.