Math Question - solved, thanks.

[Scootin159]

I need to create a graph with the following properties, and it's got me baffled, lol.

Anyways, here's the conditions:

f(0) = 0.8
f(3000) = 0

It needs to have a logrithmic pattern, with a big plateau at the top and a sharp drop off at the end.

Any ideas?

 

[RevolutionNeo]

Don't forget to carry the one!

 

[RaynorWolfcastle]

solve the following equations for a and b
log(b) = 0.8
log(3000a+b) = 0

your function will be of form log(ax+b)

 

[Goosemaster]

so what's the problem?...not the problem...well you know what I mean...

 

[Alphathree33]

Originally posted by: RaynorWolfcastle
solve the following equations for a and b
log(b) = 0.8
log(3000a+b) = 0

your function will be of form log(ax+b)

That's not going to produce a sharp drop off at the end.

EDIT: So... uh... just say "if x > dropOffPoint, f(x) = 0"... it'll be a piecewise function... yeah....

Seriously, I don't have a good answer for you.

 

[Scootin159]

Originally posted by: RaynorWolfcastle
solve the following equations for a and b
log(b) = 0.8
log(3000a+b) = 0

your function will be of form log(ax+b)

Actually that's exactly what I wanted.

Thanks

btw, the result was: y = log(-0.00176985781493 x + 6.3095734448)