若函数f(x)=ax2+8x-6lnx在点M(1,f(1))处的切线方程为y=b

题型:解答题

问题:

若函数f(x)=ax2+8x-6lnx在点M(1,f(1))处的切线方程为y=b.

(1)求a,b的值;

(2)求f(x)的单调递增区间.

考点:函数的单调性与导数的关系函数的极值与导数的关系
题型:解答题

B The Ancient Olympic Games古代奥林匹克运动会
According to historical records,the first (1) Olympic Games can be traced back to 776 BC.They (2) dedicated to the Olympian gods and were staged on the (3) plains of Olympia.They continued for nearly 12 centuries, (4) Emperor Theodosius decreed in 393 A.D.that aU such"pagan cults" (5) banned.
The oldest myth which concerns the beginning of the (6) Games is that of Idaios Daktylos Herakles.According to other (7) ,Zeus,the father of humanity,fought and defeated Cronus in a (8) for the throne of the gods.Finally,the well-known (9) Herakles is mentioned who staged games in Olympia in honour (10) Zeus,because the latter had helped him conquer Elis when (11) went to war against Augeas.
Through the 12 centuries of (12) Olympic Games,many wonderful athletes competed in the stadium and (13) hippodrome of ancient Olympia’s sacred area,moving the crowds with (14) great achievements.Although mortal,their Olympic victories immortalised them.Of (15) best athletes who left their mark on the sacred vallev (16) Olympia,some surpassed all limits and became legends by winning (17) successive Olympic Games and remaining at the forefront of their (18) for more than a decade.
The ancient Olympic Games were (19) a one.day event until 684 BC.when they were extended (20) three days.In the 5th century B.C.,the Games were extended again to cover five days.

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骰子是一个质量均匀的正方体,它的六个面分别刻有1个、2个、3个、4个、5个、6个点,掷一粒骰子时当1点或5点向上则称为“在手”.那么一次掷骰“在手”的概率为(  )
A.
1
2
B.
1
3
C.
1
4
D.
1
6
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男性,39岁。临床诊断复合性溃疡,行毕Ⅱ式胃大部切除术(空肠近端对大弯、远端对小弯)后3个月,每进食5~30分钟即出现上腹饱胀不适,恶心、呕吐,腹泻、偶有腹绞痛,同时伴心慌、出汗、眩晕、面色苍白、乏力等症状。引起上述症状最可能的原因是()

A.吻合口梗阻

B.输出袢梗阻

C.输入袢梗阻

D.倾倒综合征

E.低血糖综合征

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患者右侧霍纳氏征阳性,右上下肢轻瘫,肌张力增高,左颈以下皮肤痛觉减退,右下肢深感觉消失,病变在()

A.右侧颈膨大

B.左侧颈膨大

C.左侧颈脊髓

D.右侧颈脊髓

E.右侧延髓

题型:解答题

由具体的、硬的、可行动的,现实的,计划五个音节构成的目标是()

A.软的

B.模糊的

C.犀利的

D.宽泛的

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