Page 173 - aljaber

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d =0 c=0 b =1 a = −1

.( ) . :( .
)
( )
)
c +d )

.c +d .a +b )
)
a +b

:( ) (

n −6 <n −5 <n −1 <n +1 <n +4 (

.n −1

:( )

x + 11 > 7 1 ⇔ x > −3 1
22

x + 7 1 > 11 ⇔ x > 3 1
22

7 1 + 11 > x ⇔ 18 1 > x
22

.x = 4 x . 3 1 < x < 18 1

22 (

:( )

a = 200 b = 1200 .

. b = 1200 = 6
a 200

:( ) (

. 4 < 4.5 = 1 17 < 17.5 = 1 100 < 100.5 = 1
35 35 2 201 201 2
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