5.4 Polynomial&amp;Rational Inequalities

# 5.4 Polynomial&amp;Rational Inequalities - in that...

This preview shows pages 1–2. Sign up to view the full content.

5.4: Polynomial & Rational Inequalities Steps for solving polynomial and rational inequalities: [1] Set the inequality equal to zero; rational inequalities should be written as a single quotient. [2] Find the numbers at which the expression f is equal to zero and, if rational, the numbers at which it is undefined; these are called critical points. [3] Use the numbers found in step 2 to separate the real number line into intervals. [4] Evaluate f for a number in each of the intervals: [a] If the value of f is positive, then f(x) > 0 for all numbers

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: in that interval; [b] If the value of f is negative, then f(x) < 0 for all numbers in that interval. Solve each of the following: 1. (x – 8)(x + 3) > 0 2. x 2- 3x ≤ 0 1. 2. Result Result 3. 8x 2 < 6 –13X 4. 2(2x 2 – 6x) > -9 3. 4. Result Result 5. 4x 2 + 49 < 28x 6. x 4 ≤ 8x 5. 6. Result Result 7. 2 2 15 1 x x x--+ 8. 18 9 x x + ≤ Zeros: Asymptote: 7. 8. Result Result 9. 6 2 2 6 x x-≤-Zeros: Asymptote: 9. Result 10. 2 5 1 1 1 x x x x + + < +-Zeros: Asymptotes: 10. Result...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern