( ) 3/10/2014
(01-17-2015), (09-09-2014)
...
(09-10-2014), (09-10-2014)
cosx=u
2014-2015 2018...
(09-10-2014)
sin x cosx
; 09-10-2014 11:59 AM
598 sin x
( )
[CENTER] ( ) ( ) ( ) - ( ) (mohammad Leban)
2024... ...ceilling and floor functions () 2014 ... -...
" ( ) u , y
2014-2015
(598) : ( ) ( 1) ( cos ) ( ) () - -
2022... ... ... ... ...
"
2014-2015 ... 1990
2 4 (3)
3 ...
: 1 (0 1 )
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