How to i manipulate this fraction

  • Thread starter Thread starter seang
  • Start date Start date
  • Tags Tags
    Fraction
Click For Summary
SUMMARY

The discussion focuses on manipulating the fraction \(\frac{100K}{x^2 + (25 + \alpha)x + (\alpha 25 + 100K)}\) to achieve the form \(\frac{K}{x^2 + \beta x + (K)}\). Key insights include the use of a scaling factor, denoted as \(C\), to adjust the numerator and denominator while maintaining the equality of the top and bottom \(K\). The participants emphasize the importance of keeping the \(x^2\) term unchanged and suggest exploring the relationship between \(K\) and the new variable \(K'\) to facilitate this transformation. The discussion also raises the question of alternative methods if scaling is not permitted.

PREREQUISITES
  • Understanding of algebraic manipulation of fractions
  • Familiarity with polynomial expressions and their coefficients
  • Knowledge of scaling factors in mathematical equations
  • Basic comprehension of variable substitution in equations
NEXT STEPS
  • Research polynomial long division techniques for fraction manipulation
  • Explore the concept of scaling factors in algebraic expressions
  • Study variable substitution methods in algebra
  • Learn about the implications of maintaining polynomial degrees during transformations
USEFUL FOR

Students and educators in mathematics, particularly those focused on algebra and polynomial manipulation, as well as anyone seeking to understand advanced fraction manipulation techniques.

seang
Messages
184
Reaction score
0

Homework Statement


I need to make this:

[tex]\frac{100K}{x^2 + (25 + \alpha)x + (\alpha 25 + 100K)}[/tex]

look like this:

[tex]\frac{K}{x^2 + \beta x + (K)}[/tex]

Homework Equations



Beta and K can be any combination of variables, as long as the top K and bottom K are equal. A scaling factor is allowed to come outside of the fraction if necessary.

The Attempt at a Solution

 
Physics news on Phys.org
The "scaling factor" means that you can multiply either numerator or denominator to make them the same. Multiplying the denominator by something would change the "x2" term and, apparently, you don't want that. That means you must have something of the form
[tex]\frac{1}{C}\frac{100CK}{x^2+ (25+\alpha)x+ (25\alpha+ 100K)}[/itex]<br /> It's pretty obvious what [itex]\beta[/itex] must be! Can you choose C and the <b>new</b> K so that the numerator and constant term in the denominator are the same? (You might want to initially call the new K something like K' to avoid confusion.)[/tex]
 
alright, thank you.

But now, for the sake of argument, let's say I wasn't allowed to have a scaling factor outside of the fraction--what could I do then?
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 21 ·
Replies
21
Views
4K
  • · Replies 7 ·
Replies
7
Views
7K
  • · Replies 16 ·
Replies
16
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
9
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K