(01-17-2015), (09-09-2014)
12
(09-10-2014), (09-10-2014)
cosx=u
...
(09-10-2014)
sin x cosx
; 09-10-2014 11:59 AM
598 sin x
2 ...!!..
( )
Complete the square
[CENTER] ( ) ( ) ( ) - ( ) (mohammad Leban)
... 2 ... ...
" ( ) u , y
2 1
(598) : ( ) ( 1) ( cos ) ( ) () - -
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"
:
4 3 2 (1) 2012
: 1 (0 1 )
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