【大二MATH的几个题请大家帮忙.很着急.mathemati-查字典问答网
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  【大二MATH的几个题请大家帮忙.很着急.mathematicsofinvestment的几个题#1Aperson'ssavingearnaneffectiverateofi=0.12onwhich45%incometaxispaid.Iftheinflationrateis10%peryear,whatistheannualafter--taxrealrateo】

  大二MATH的几个题请大家帮忙.很着急.

  mathematicsofinvestment的几个题

  #1

  Aperson'ssavingearnaneffectiverateofi=0.12onwhich45%incometaxispaid.Iftheinflationrateis10%peryear,whatistheannualafter--taxrealrateofreturn?

  #2

  Acustomerisofferedaninvestmentwhereiscalculatedaccordingtothefollowingforceofinterest:

  St=0.02to

  前3题知道怎么做了.......帮我看下第4题吧..

  #4

  (a)Ataneffectiveannualinterestrateof12%,calculatethenumberofyears(includingfractions)itwilltakeforaninvestmentof1000toaccumulateto3000.

  (b)Repeatpart(a)usingassumptionthatforfractionsofayear,simpleinterestisapplied.

  (c)Repeatpart(a)usinganeffectivemonthlyinterestrateof1%.

  (d)Supposethataninvestmentof1000accumulatedto3000inexactly10yearsateffectiveannualrateofinteresti.Calculatei.

  (e)Repeatpart(d)usinganeffectivemonthlyrateofinterestj.Calculatej.

1回答
2019-05-26 15:40
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江海

  (a)x1000×(1+12%)=3000x(1+12%)=3000÷10003X=log=9.6941.12(b)看不懂(c)x1000×(1+1%)=3000x(1+1%)=3000÷10003X=log=110.41.0110(d)1000×(1+i)=3000i=11.6%10x12(e)1000x(1+j)=300...

2019-05-26 15:43:24

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