(01-17-2015), (09-09-2014)
(09-10-2014), (09-10-2014)
cosx=u
1990
(09-10-2014)
sin x cosx
; 09-10-2014 11:59 AM
2015
598 sin x
( )
3/10/2014 ...
[CENTER] ( ) ( ) ( ) - ( ) (mohammad Leban)
- - ... gifted - ... ... - 2 -
" ( ) u , y
2018... 1
(598) : ( ) ( 1) ( cos ) ( ) () - -
... 2019
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2 ... (3)
(3) : (1) 2012 2
: 1 (0 1 )
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