the and solving inequalities
definitions GA universe have set bandwidth is the set of all real numbers, and a JA, B R without a < B
the symbolic meaning. Write the graph on the line, number, for example the
open (a b), {x | a < x < B}, (2 4)
PI ed [,] {a B x | a x B} [,]
3 6 half open.! D
.Half งปิ. D
[, a b)
(a, the b]
{x | a x < B}
{x | a < x B}
[, 2 5)
(2 5]
, infinite (a
[, ), a
)
(-
, a)
(-
, a]
{x |. X > a}
{x | x a}
{x | x < a}
{x | x a}
), (3
, [3 )
(-
, 5)
(-
, 5]
summary principle solving inequalities
.If we can understand how to solve inequalities and according to the actual work, the test. Problems using a table
quite slow, so the product introduce The principle thought of these
. Main 1. Make one side of the inequality is 2
.Separate factor multiply or divide into brackets. (ถ้าก. Are high may require synthetic division assist)
3. If any factor sure positive cut ti ng (not sure if after cutting ti ng should check the)
4.. critical value (value opposite each other within the factor) to write on the line, the number
5. If ส.ป. X MPs of all positive plus negative put alternate starting from the right hand side before
1 caution.Don't try to move towards the multiplication or division, because this variable, a negative number to multiply or divide would offer
อสมการกลับ side
2. Please, make up the is not so. Answer that comes from the need to be open, always looking like
2.Find the answer. เซตค of
2
x 4 x 3 0
how Tom, factor has x 1 x 3 0
C answer of the equation
x 1 x 3 0 is
x 1 3
wrote, วกิฤต point on the line. The number by ranging from Noh you go. Break line hot number into
range. ใหย้ draw was made. The Lok สุดเป็น always positive design author,,,,... Sat บักนั until all the
. . 3 1
answer. . . 3 1 urinary,,
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