Math Is Fun Forum

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Investment Graph

I have made a neat little graphing application that shows the values of investments/loans etc.

Have a play with it here: Investment Graph

I need to write lots of instructions, and hopefully at the end of it we will all be financial gurus

(As usual, tell me all bugs, ideas, etc)

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"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Investment Graph

"Bug": Take your mouse, and move it vertically but not horizontally.  You'll notice two values dancing.  This is because there is sometimes and ending '.' and sometimes there isn't.  Seems to only occur with different values, 1,000,000 does it.

Suggestion: You need an algorithm that can handle font collisions better, especially when the numbers get large.  I'll see if I can work something out.

Bug: Type 1, then hold down the 0 key for a while.  You'll eventually get up to 1*10^300 or so, at which point the program says infinity and your browser crashes.

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"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Re: Investment Graph

How cute, dancing numbers! I will investigate why.

The 1*10^300 crashed the browser? Flash isn't supposed to do that! It can freeze for about 10 seconds, then a message asks you if you want to stop processing. Anyway, I will check it out. Thanks.

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"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Investment Graph

I got a not responding and had to force exit firefox.

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"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: Investment Graph

I had a look at it, the graph is fantastic!
It makes things so simple, for investors!!!

Well done (yet again), MathsIsFun!

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Re: Investment Graph

Updated ... hopefully fixed the bugs.

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"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

espeon

Real Member

Registered: 2006-02-05

Posts: 2,586

Re: Investment Graph

how do i use it? it could help me work out how much money i can make on harvest moon friends of mineral town lmfao! ( i already have almost 1 mill)

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Presenting the Prinny dance.
Take this dood! Huh doood!!! HUH DOOOOD!?!? DOOD HUH!!!!!! DOOOOOOOOOOOOOOOOOOOOOOOOOD!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: Investment Graph

If I remember, there isn't any bank or equivalent place where you can deposit money to get interest on that game, so you'd put the interest as 0. Then you put in the amount that you think you gain each year, and it will calculate how much money you'll get over x years.

Because interest isn't a factor in that case though, the calculation is fairly simple and could be done without needing to use this.

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Why did the vector cross the road?
It wanted to be normal.

espeon

Real Member

Registered: 2006-02-05

Posts: 2,586

Re: Investment Graph

hmm BUT! you have to invest in seeds, food, gifts and ingrediants! MWAHAHAHAAHAHA! where do i put what in which boxes?

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Presenting the Prinny dance.
Take this dood! Huh doood!!! HUH DOOOOD!?!? DOOD HUH!!!!!! DOOOOOOOOOOOOOOOOOOOOOOOOOD!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!