Can I Solve for A and B in These Equations?

  • Context: High School 
  • Thread starter Thread starter clemon!!
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Discussion Overview

The discussion revolves around solving a system of equations involving variables A and B. Participants explore methods for finding A and B, express uncertainty about convergence, and inquire about using Excel for calculations. The scope includes mathematical reasoning and problem-solving techniques.

Discussion Character

  • Mathematical reasoning
  • Homework-related
  • Debate/contested

Main Points Raised

  • Some participants assert that it is possible to find values for A and B from the given equations.
  • One participant expresses uncertainty about whether the equations converge and questions the validity of the figures.
  • Another participant suggests subtracting one equation from the other to eliminate the AB term and solve for A first.
  • There are inquiries about setting up Excel to automatically update the values of A and B as inputs change.
  • A participant mentions using software with a time constraint and requests assistance in finding the solution quickly.
  • One participant proposes a different set of equations involving additional variables, indicating a shift in the problem context.

Areas of Agreement / Disagreement

Participants generally agree that A and B can be found, but there is uncertainty regarding the convergence of the equations and the validity of the figures. Multiple approaches are suggested, and no consensus on a single method is reached.

Contextual Notes

Some participants express concerns about the convergence of the equations and the presence of the AB term, indicating potential limitations in the problem setup. There are also mentions of using software and online calculators, which may not handle the equations as expected.

Who May Find This Useful

This discussion may be useful for individuals interested in solving systems of equations, using software for mathematical calculations, or those looking for assistance with similar homework problems.

clemon!!
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80A = 12000 - AB
2000A = 2000 - AB

I can find A and B right? If not I can provide more??


Thanks :o !
 
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Yes you can find out A and B !
 
also is there any way to set up excel so that as i change the figures the answer what A and B is automatically changes?

i'm sorry to be so bad at math - it's been like 12 years since i stuided any :o
 
lazyaditya said:
Yes you can find out A and B !

honestly - i am using software that runs out in like 20 hours. this is a music hobby thing - i don't suppose you can give me the answer plus also if excell will do it for me?? i know it'd be simple for everyone here... :) :) !there are online calculators but they don't seem to cope with the A*B component!
 
Hey clemon.

Minus the first equation from the second and collect the terms for the A's and solve for A. Then plug A into one of the equations and solve for B.
 
they don't converge!

what about:

100=A/(100-B)+C
12000=A/(80-B)+C
200=A(5000-B)+C
thanks!
 
thanks - I'm trying to find it with excel atm. not sure if these figures even converge tbh.
 
80A = 12000 - AB
2000A = 2000 - AB

Didn't you consider getting rid of the "AB" term by subtracting one equation from the other? 80A- 2000A= -1920A= 10000. Solve that for A and then solve either of the two equations, using that value of A, for B
 

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