已知函数f(x)=ln(x+1)+ax若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围等差数列{An}的前n项和为Sn,已知A(m-1)+A(m+1)-A(m)²=0 S(2m-1)=38,（括号内的数位于下标）则m=（）设等比数列{An}的前n项和为Sn,若A

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/16 13:29:24

已知函数f(x)=ln(x+1)+ax若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围等差数列{An}的前n项和为Sn,已知A(m-1)+A(m+1)-A(m)²=0 S(2m-1)=38,（括号内的数位于下标）则m=（）设等比数列{An}的前n项和为Sn,若A
已知函数f(x)=ln(x+1)+ax若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围
等差数列{An}的前n项和为Sn,已知A(m-1)+A(m+1)-A(m)²=0
S(2m-1)=38,（括号内的数位于下标）则m=（）
设等比数列{An}的前n项和为Sn,若A1=1,S6=4*S3,则A4=（）
设函数f(x)=3x^2+a/x^3(x∈(o,+∞))求正数a的取值范围,使对于任意x∈(0,+∞)都有f(x)>=20.
已知函数f（x）＝（ax＋1）×a的（－x）次幂,a＞0且a≠1
（1） 讨论f（x）的单调性,并求出极值x0
（2）若（1）中的x0＝g（a）在（1,e〕上的最小值

已知函数f(x)=ln(x+1)+ax若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围等差数列{An}的前n项和为Sn,已知A(m-1)+A(m+1)-A(m)²=0 S(2m-1)=38,（括号内的数位于下标）则m=（）设等比数列{An}的前n项和为Sn,若A
Ralph Lauren has long been outfitting guys within the greatest outfits for 4 decades.The signature polo shirt has become the very best activity shirts combining the very best color mixtures and style whilst maintaining top quality via the toughest of sports.Sports is actually a way for many men and women to extend their mastery of physical fitness on the taking part in subject and while in the setting.Athletes can possess the self-assurance that Polo are long lasting,so the shirt stays tucked in while you play,manufactured of high quality materials which can be worn in the sport and stand up to the roughest of treatment method and enviroments.Snug,so the shirt stays tucked in when you play,however fashionable these shirts are created of woven cotton mesh that preserve via many washes and wear.Polo are designed which has a lengthier in back than in front,however fashionable these shirts are created of woven cotton mesh that preserve via many washes and wear.Polo are designed which has a lengthier in back than in front,so the shirt stays tucked in while you play,GIORGIO ARMANI,in addition to includes taping within the shirt,across the shoulders and along the neckline which provides the athlete reinforcement within the high-stress regions.Polo ralph lauren also have a knit-rib collar and cuffs which are created to resist the waviness that washings trigger a lot of other reduce good quality sports shirts.A lot of lesser quality shirts break down after repeated washings compared to Polo.Your polo will previous through one of the most extreme games plus a lifetime of washings and even now will search scorching on and off the field.

最后一体的题目看的不是特明白，不太清楚你写的啥

已知函数f(x)=ln(1+x^2)+ax,讨论f(x)的单调性 已知函数f(x)=ln(ax)/(x+1)-ln(ax)+ln(x+1)已知函数f(x)=ln(ax)/(x+1) - ln(ax) + ln(x+1),（a不等于0且为R）1.求函数f(x)的定义域2.求函数f(x)的单调区间3.当a>0时,若存在x使得f(x)≥ln（2a）成立,求a的取值范围 已知函数f(x)=ln(2ax+a2-1)-ln(x2+1), 已知函数f(x)=ln(ax+1)+x²-ax,a>0讨论函数f(x)的单调区间 已知函数f(x)=ln(ax)/(x+1) - ln(ax) + ln(x+1),（a不等于0且为R） 1.求函数f(x)的定义域 2.已知函数f(x)=ln(ax)/(x+1) - ln(ax) + ln(x+1),（a不等于0且为R）1.求函数f(x)的定义域2.求函数f(x)的单调区间3.当a>0时,若 已知函数f（x）=x-1/2ax^-ln（x+1） 已知常数a>0,函数f(x)=ln(1+ax)-2x/x+2 已知函数f(x)=ln(1+e^2x)+ax是偶函数则a= 已知函数f (x)=(x+1)ln(x+1)-ax^2-x(a∈R),若对任意X>0 f(x) 已知函数f（x）=ln（x+1）-ax^2-x求f（x）单调区间 已知函数f(x)=ln(x+1)+ax若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围 已知函数f(x)=ln(1+x^2)+ax (a≤0).　讨论f(x)的单调性 已知函数f（x）=ln(ax+1)+x^2-ax,a>0 讨论单调区间 已知函数f(x)=ln(ax+1)+x²-ax(a＞0) （1）若x=1/2是函数f(x)的一个极值点 求a （2）讨论函数f(x)的单已知函数f(x)=ln(ax+1)+x²-ax(a＞0)（1）若x=1/2是函数f(x)的一个极值点 求a（2）讨论函数f(x)的单 已知函数f（x）=ln（ax）/（x+1)+ln(x+1)-ln(ax)(a不等0,a属于R） (1)求函数f（x）的定义域 已知f(x)=ln(x^2-ax+2a-2)(a大于0),若f(x)在[1,+∞)上是增函数,求a的取值范围. 求函数f(x)=ln(ax+1)+x^2-ax定义域RT 已知函数f(x)=ln(x+1)+ax 若存在x∈[1,2],使不等式f'(x)≥2x成立,求a范围求函数f(x)的单调区间