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This is an archived, read-only copy of the United-TI subforum , including posts and topic from May 2003 to April 2012. If you would like to discuss any of the topics in this forum, you can visit Cemetech's TI-BASIC subforum. Some of these topics may also be directly-linked to active Cemetech topics. If you are a Cemetech member with a linked United-TI account, you can link United-TI topics here with your current Cemetech topics.

TI-Basic => TI-BASIC
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DarkerLine
ceci n'est pas une |

Super Elite (Last Title)

Joined: 04 Nov 2003
Posts: 8328

 Posted: 02 Jan 2004 04:50:49 pm    Post subject: I have tried to find out what npv( does. Here are my results: 1) the arguments are npv(integer, integer, list) 2) npv(x, y, list) is the same as y + npv(x,0,list) 3) npv(0, 0, list) is sum(list) 4) the result is always a rational number. 5) it involves 100, 101, 102, etc. somehow Could someone please help me with this?
sgm

Calc Guru

Joined: 04 Sep 2003
Posts: 1265

 Posted: 03 Jan 2004 02:54:25 pm    Post subject: Go to Page 15Last edited by Guest on 03 Jan 2004 02:55:08 pm; edited 1 time in total
DarkerLine
ceci n'est pas une |

Super Elite (Last Title)

Joined: 04 Nov 2003
Posts: 8328

 Posted: 03 Jan 2004 03:06:02 pm    Post subject: I was actually wondering what the formula was for calculating it. I don't take any advanced economics class and don't understand that stuff.
Arcane Wizard
`semi-hippie`

Super Elite (Last Title)

Joined: 02 Jun 2003
Posts: 8993

 Posted: 04 Jan 2004 06:08:29 am    Post subject: npv(interest,CF0,CFList,CFFreq) interest = interest where current net value of all cashflows equals 0 CF0 = cash flow at time 0 CFList = list of cash flows after time = 0 CFFreq = occurance of same element of CFList, optional Example: CF0 = 1500 CFList = {2000,3000,2500} CFFreq = {3,2,4} //2000 occurs 3 times, 3000 occurs twice, 2500 occurs 4 times -> effectively changes CFList to: {2000,2000,2000,3000,3000,2500,2500,2500,2500} You input the interest rate, inital investment, and a list of cash flows (in=positive, out=negative) and it calculates the sum so you can see if it's a provitable investment. npv(6,-2000,{1000,-2500,0,5000,3000}) returns: 2920,65 Maybe that helps a bit? I'll see if I can find out the actual calculation later, have to go now.
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