My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum

LinkBack Thread Tools Display Modes
April 21st, 2017, 12:12 AM   #1
Joined: Apr 2017
From: london

Posts: 1
Thanks: 0

Please help me write the formula

I need to formulate the follow relationship in proper math symbols:

Differential in A (last day's value minus today's) has a tendency to reach the Differential in B (today's)

I though this could be expressed with

AΔ -> BΔ

But I guess there are more elegant and mathematically correct ways to do this in Maple or Mathcad?

Thank you!

Last edited by skipjack; April 21st, 2017 at 04:35 AM.
dave777 is offline  
April 21st, 2017, 02:24 AM   #2
Senior Member
Joined: Feb 2016
From: Australia

Posts: 1,476
Thanks: 495

Math Focus: Yet to find out.
Not quite sure what you are asking. Can you give more information about A and B?

Let 'last days value' = LV, and 'today's value' = TV.

Then A = LV - TV, and B = TV.

As you have said, you could say $\Delta A = LV - TV$.

If you want to show that '$\Delta A$ approaches B', then you need to determine what causes this to happen.

Or maybe,

A = $V_{i - 1} - V_i, \ i = 1, 2, ...$ where $i$ denotes the current day, and V is the value.
Joppy is online now  
April 21st, 2017, 04:42 AM   #3
Global Moderator
Joined: Dec 2006

Posts: 18,445
Thanks: 1462

A definition of "tendency to reach" is needed, else any use of symbols could well be misleading.
skipjack is offline  

  My Math Forum > High School Math Forum > Algebra

formula, write

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Given a>c and b>c, can I write {a,b}>c? ga34gep Algebra 4 May 3rd, 2016 02:37 PM
Not sure how to write the formula. GIjoefan1976 Algebra 3 March 16th, 2016 07:01 PM
word problem. just not sure how to write words as a formula GIjoefan1976 Algebra 4 February 13th, 2016 08:59 PM
Math, use my head to calculate, or write down the formula? bqeuux Math 2 February 9th, 2016 09:41 AM
Re-Write Dukeee Calculus 1 July 10th, 2013 07:16 AM

Copyright © 2018 My Math Forum. All rights reserved.