
Calculus Calculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 13th, 2015, 12:20 PM  #1 
Newbie Joined: Sep 2015 From: huddersfield Posts: 1 Thanks: 0  Finding a term in a graphing sequence.
Hi. Maths has never really been my strong point...even with the chemistry degree to boot, anything over Alevel 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 . 
September 14th, 2015, 03:51 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,484 Thanks: 2041 
What exactly did you mean by "increase proportionally to the limit"?


Tags 
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  PreCalculus  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 