• Support PF! Buy your school textbooks, materials and every day products Here!

Range of values in regards to quadratics and discriminant

  • Thread starter ybhathena
  • Start date
  • #1
42
0

Homework Statement



Determine the range of values of the constant a so that the solution of ax^2+2ax+3>=0 (when a >0) is all real numbers



Homework Equations



D = b^2-4ac


The Attempt at a Solution



The discriminant is 0, 3. I need to know how to arrange them to get the range. The range is 0<a<=3 in the answers. How do I get it?
 

Answers and Replies

  • #2
33,072
4,772

Homework Statement



Determine the range of values of the constant a so that the solution of ax^2+2ax+3>=0 (when a >0) is all real numbers



Homework Equations



D = b^2-4ac


The Attempt at a Solution



The discriminant is 0, 3.
No, the discriminant is 4a2 - 12a. What do your two values have to do with the discriminant? (I know, but I am trying to get you to be accurate in what you say.)
I need to know how to arrange them to get the range. The range is 0<a<=3 in the answers. How do I get it?
 

Related Threads for: Range of values in regards to quadratics and discriminant

Replies
2
Views
663
  • Last Post
Replies
3
Views
2K
Replies
7
Views
1K
Replies
5
Views
2K
  • Last Post
Replies
14
Views
3K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
8
Views
2K
Top