Page 251 - aljaber
P. 251
@ @¶ìÿa@óÝy‹¾a@ u@ @RSX
a1r 6 = 5832 ()
a1 8
r 6 = 729
r = ±3
.a5 = a1r 4 = 8 ×(±3)4 = 648
:( )
d − a = 3(b − a)
b −a = d −a = r :( ) ( )
33 )
.c − a = 2(b − a) = 2r
3
.d
. −21, − 21 + d, − 21 + 2d, 24
. −6 + 9 = 3
:( ) (
2, 4, 8, 16, 32, 64, … ( )
1, − 2, 4, − 8, 16, − 32, 64, … ( )
1 , 1, 1, 2, 4, 8, 16, 32, 64, … ()
42 ()
1 , 2, 16, 128, …
4
.64 ( )
:( ) ( )