Troubleshooting Inequality: Can't Seem to Solve the Last One

Click For Summary
SUMMARY

The discussion focuses on solving the inequality f(x) < 0, specifically identifying the correct intervals for the function. Participants confirm that the solution excludes the points x = -2 and x = 3, as f(-2) = 0 and f(3) = 0, which do not satisfy the strict inequality. The valid solution intervals are determined to be (-∞, -2) ∪ (3, ∞).

PREREQUISITES
  • Understanding of inequalities in mathematics
  • Knowledge of interval notation
  • Familiarity with function behavior and limits
  • Basic algebra skills
NEXT STEPS
  • Study the properties of inequalities and their graphical representations
  • Learn about strict versus non-strict inequalities in mathematical functions
  • Explore interval notation and its applications in calculus
  • Practice solving complex inequalities with multiple conditions
USEFUL FOR

Students studying algebra, educators teaching inequalities, and anyone looking to enhance their understanding of mathematical functions and their properties.

ahbm
Messages
1
Reaction score
0
Trying to get the last one, but not able to do it. What am I missing. I know that I can't but [-2,infinity] or [3,infinity] because for -2, and 3 y=0 and is not > 0. Any help appreciated.
 

Attachments

  • Calculus.png
    Calculus.png
    14 KB · Views: 125
Mathematics news on Phys.org
Is g(-2) > 0? No, so that part of the interval will be [math]( -\infty, -2)[/math].

-Dan
 
Also, because the question requires that f(x) be strictly less than 0, f(x)&lt; 0 you cannot include x= -2 or x= 3. f(x)&lt; 0 is true for (-\infty, -2)\cup (3, \infty).
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 12 ·
Replies
12
Views
1K
  • · Replies 20 ·
Replies
20
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K