How to Solve for h When Choosing a Value of a in a Parabola Equation?

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SUMMARY

The discussion centers on solving for the variable "h" in the parabola equation (x-h)² = ±4a(y-k) when "a" is chosen. The participant expresses confusion regarding how selecting a value for "a" influences the corresponding value of "h". It is established that any non-zero value of "a" will yield a valid "h", and the relationship is further clarified through the differential equation a(y')² = y. The conclusion emphasizes that the choice of "a" directly impacts the derived value of "h".

PREREQUISITES
  • Understanding of parabola equations, specifically (x-h)² = ±4a(y-k).
  • Familiarity with the concept of vertex and focus in conic sections.
  • Basic knowledge of differential equations and their applications.
  • Ability to manipulate algebraic expressions and perform substitutions.
NEXT STEPS
  • Explore the properties of parabolas, focusing on vertex and focus relationships.
  • Study the derivation of differential equations from conic sections.
  • Learn about the implications of varying parameters in quadratic equations.
  • Investigate the graphical representation of parabolas based on different values of "a" and "h".
USEFUL FOR

Students studying algebra and calculus, particularly those focusing on conic sections and differential equations. This discussion is beneficial for anyone seeking to deepen their understanding of the relationships between parameters in parabola equations.

aspirare21
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Homework Statement


Parabolas with vertex on the x-axis,with axis parallel to the y-axis,and with distance from focus to vertex fixed as "a".

the question is pick your own value of "a". Then for "a" value pick value of "h". What does it mean? I'm confuse.. T__T

Homework Equations


(x-h)² = ±4a(y-k)
(x-h)² = ±4ay

k=0



The Attempt at a Solution



(x-h)² =4ay
2(x-h) =4ay'

answer is (x-h) 2ay'

square both sides
(x-h)² = 4a²(y')²

substitute
4a²(y')² = 4ay
a(y')² = y

I don't know what will happen if i choose a value of "a" then it will generate a value of "h".. T__T
 
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Is that all the question says? Is there another part to the question? If not, OK, a=2 and h=3. Any value of a and h except a=0 will satisfy the conditions given in the question.
 
I forgot.. the answer should be in differential equation. show that when you pick "a" you should derive "h". Kindly confusing to me..
 

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