Home work~急若a>0,b>0,ab>1,log1/2 a=ln2,则loga b与log1/2 a的关系?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 21:06:42
Homework~急若a>0,b>0,ab>1,log1/2a=ln2,则logab与log1/2a的关系?Homework~急若a>0,b>0,ab>1,log1/2a=ln2,则logab与log

Home work~急若a>0,b>0,ab>1,log1/2 a=ln2,则loga b与log1/2 a的关系?
Home work~急
若a>0,b>0,ab>1,log1/2 a=ln2,则loga b与log1/2 a的关系?

Home work~急若a>0,b>0,ab>1,log1/2 a=ln2,则loga b与log1/2 a的关系?
log(1/2,a) = ln(a)/-ln2 = ln2
ln(a) = -(ln2)^2 < 0
log(a,b) - log(1/2,a) = ln(b)/ln(a) - ln2
= - ln(b)/(ln2)^2 - ln2
= -(ln(b) + (ln2)^3)/(ln2)^2
ln(b) < -(ln2)^3 的时候,log(a,b) > log(1/2,a)
ln(b) = -(ln2)^3 的时候,log(a,b) = log(1/2,a)
ln(b) > -(ln2)^3 的时候,log(a,b) < log(1/2,a)
祝你学习天天向上,加油!1

log(1/2,a) = ln(a)/-ln2 = ln2
ln(a) = -(ln2)² < 0
∴00
又ab>1
∴b>1
∴loga b<0
∴loga b<0应该是这个样子的
不过homework最好还是自己做,我一般的选择都是不会就只问同学

a=(1/2)^(ln2)
a*b>1
b/(2^ln2)>1
因为ln2>0
2^ln2>1>0
b>2^ln2>1
a<1
所以log(a)b=-log(a^-1)[b]<0
而log(1/2)[a]=ln2>0>log(a)b

Home work~急若a>0,b>0,ab>1,log1/2 a=ln2,则loga b与log1/2 a的关系? He goes to walk by bus,but he walks __ after work A.to home B.the home C.his home D.to his home ( ),he went home.A.finishing the work B.had finished the work C.after finished the work D.having finished the work my father usually come back home late __ work.A.my father usually come back home late __ work.A.at B.fromC.off D.for on my way____,l usualli buy some food to eat A.school B.home C.to home D.work At about six,his father ()from work.A.gets home B.goes to work C.goes to bed 要解析 Susan came back home late ()work.A.for B.to C.from D.before They are walking home after ___ the work.A.finish B.to finish C.finishing Soctt come home from___________at five and Mrs soctt eats dinner at six A.working B.work C.workD.to work B.works 简单Pascal一道题vara,b:integer;function work(a,b:integer):integer;beginif a mod b 0 thenwork := work(b,a mod b)elsework := b;end;beginread(a,b);writeln(work(a,b));end.请问 work := work(b,a mod your mather does some---at home.does not she?A.working in B.work in C.works inD.working Not until he finished his work _______go home.A he did B did heCwill be D he will Can you---her----her home work?a help;with b help;doing c help;in帮忙一下啊,亲. My work ___,I went home.A.had been done B.done C.having done D.to be done Mr.Smith is not at home.He___to work.A.has gone B.has been C.had been D.had gone she finishes work at 10:30.she goes home ( )her car.A,by B,in C,on Let me do the home work by myself ,A.shall we B.will you C.do you D.shall I I noticed him__the home work for his brother.A.doing B.does C.did Dto do(说一下原因,)