My Math Forum  

Go Back   My Math Forum > College Math Forum > Calculus

Calculus Calculus Math Forum

LinkBack Thread Tools Display Modes
September 13th, 2015, 12:20 PM   #1
Joined: Sep 2015
From: huddersfield

Posts: 1
Thanks: 0

Finding a term in a graphing sequence.


Maths has never really been my strong point...even with the chemistry degree to boot, anything over A-level required me to work hard and now, after 10 years, I have forgotten a lot of it!

I am working on an electronic device for a camera of mine. I need it to trigger different shutter speeds in a sequence that tends to a final value of seconds via a certain number of shots.

So my question is, how do I get the value for x in this case:

xs starting value of x
log2(y) - final value of x
s number of terms ("shots").

I want x to increase proportionally to the limit log2(y) to give a smooth log base 2 like curve via the number of steps s.

How can I get the value of x at point s when y,s and xs are all known.

Thanks for any help! I assume this has something to do with a differentiation, a use of the x term at the start and a proportion...I have been playing in excel for the last 2 hours and can not replicate the smooth curve I am after .
johnny010 is offline  
September 14th, 2015, 03:51 AM   #2
Global Moderator
Joined: Dec 2006

Posts: 21,026
Thanks: 2257

What exactly did you mean by "increase proportionally to the limit"?
skipjack is offline  

  My Math Forum > College Math Forum > Calculus

finding, graphing, sequence, term

Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trying to figure out formula for nth term of this sequence jonas Pre-Calculus 4 July 19th, 2017 05:28 PM
General term of a sequence Aaron Real Analysis 6 March 17th, 2015 05:06 PM
general or nth term of a sequence emohbe Algebra 1 December 14th, 2010 12:16 AM
Determine the formula for the nth term of the sequence? reddd Algebra 3 May 20th, 2010 12:50 PM
Can you find the general term of sequence? erogol Applied Math 1 April 5th, 2009 01:52 AM

Copyright © 2019 My Math Forum. All rights reserved.