试题与答案

已知函数f(x)=ax+bx2+1在点M(1,f(1))处的切线方程为x-y-1

题型:解答题

题目:

已知函数f(x)=
ax+b
x2+1
在点M(1,f(1))
处的切线方程为x-y-1=0.
(Ⅰ)求f(x)的解析式;
(Ⅱ)设函数g(x)=lnx,证明:g(x)≥f(x)对x∈[1,+∞)恒成立.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/bc7fde06d148baca73478c5635af8191.html

下面是错误答案,用来干扰机器的。

(1)图一:甲骨文;图二:金文(铭文)。  (2)图一是刻写;图二是铸刻。  (3)图一。

试题推荐
题型:选择题

16.国务院常务会议确定,从2010年1月1日起,再次提高企业退休人员基本养老金水平,提高幅度按2009年企业退休人员月人均基本养老金的10%左右确定,全国月人均增加120元左右。中央政府连续六年提高企业退休人员的基本养老金属于

A.社会救济    B.社会保险    C.社会福利    D.社会优抚

17.上述材料从政治常识角度看体现

①党中央构建社会主义和谐社会的能力不断增强 

②政府机关坚持对人民负责原则

③我国政府坚持依法执政 

④国家机关实施社会公共服务职能

A.①②      B.②④      C.①②③      D.②③④

查看答案
题型:单项选择题

When you think of the tremendous technological progress we have made, it’s amazing how little we have developed in other respects. We may speak contemptuously of the poor old Romans because they relished the orgies of slaughter that went on in their arenas. We may despise them because they mistook these goings on for entertainment. We may forgive them condescendingly because they lived 2000 years ago and obviously knew no better. But are our feelings of superiority really justified Are we any less bloodthirsty Why do boxing matches, for instance, attract such universal interest Don’t the spectators who attend them hope they will see some violence Human beings remain as bloodthirsty as ever they were. The only difference between ourselves and the Romans is that while they were honest enough to admit that they enjoyed watching hungry lions tearing people apart and eating them alive, we find allsorts of sophisticated arguments to defend sports which should have been banned long ago; sports which are quite as barbarous as, public hangings or bearbaiting.

It really is incredible that in this day and age we should still allow hunting or bull fighting, that we should be prepared to sit back and watch two men batter each other to pulp in a boxing ring, that we should be relatively unmoved by the sight of one or a number of racing cars crashing and bursting into flames. Let us not deceive ourselves. Any talk of "the sporting spirit" is sheer hypocrisy. People take part in violent sports because of the high rewards they bring. Spectators are willing to pay vast sums of money to see violence. A world heavyweight championship match, for instance, is front-page news. Millions of people are disappointed if a big fight is over in two rounds instead of fifteen. They feel disappointment because they have been deprived of the exquisite pleasure of witnessing prolonged torture and violence.

Why should we ban violent sports if people enjoy them so much You may well ask. The answer is simple: they are uncivilized. For centuries man has been trying to improve himself spiritually and emotionally—admittedly with little success. But at least we no longer tolerate the sight of madmen being cooped up in cages, or public floggings of any of the countless other barbaric practices which were common in the past. Prisons are no longer the grim forbidding places they used to be. Social welfare systems are in operation in many parts of the world. Big efforts are being made to distribute wealth fairly. These changes have come about not because human beings have suddenly and unaccountably improved, but because positive steps were taken to change the law. The law is the biggest instrument of social change that we have and it may exert great civilizing influence. If we banned dangerous and violent sports, we would be moving one step further to improving mankind. We would recognize that violence is degrading and unworthy of human beings.

It can be inferred from the passage that the author’s opinion of nowadays’ human beings is ().

A.not very high

B.high

C.contemptuous

D.critical

查看答案
微信公众账号搜索答案