KOLEKSI SIRI PERTAMA QUANTUM COOL-ACTIVE: MATHEMATICS SIMPLIFIED : FROM BASICS TO BRILLIANCE

Wrong way!

if we cross multiply

LINEAR INEQUALITIESLINEAR INEQUALITIES

KeypointsKeypoints NotesNotes

SummarySummary

RATIONAL INEQUALITIES

NOTES

1 .Do not “cross multiply”

Rewrite the inequalities with 0 on the right and

use only addition or substraction to get an

equivalent inequality.

3 .Method to solve rational number :

Table of sign

EXAMPLE :

Instead,use table

of sign method

Rational inequalities

is an inequality that

contains a rational

expressions, which

is a fraction with a

variable in the

numerator and/or

denominator

It is a ratio of two

two polynomials

EASY MEMORY OF TABLE OF SIGN METHOD

numerator = 0

denominator = 0

Use table, take one value (plus 1 and minus 1) to determine the sign (example :

if x = 3 , we take 3+1=4 and 3-1=2)

the finale answer can be given in the form of interval notation

SOLVE BOTH!