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![[Post New]](/templates/default/images/icon_minipost_new.gif) 14 Aug 2008 15:51:46 IST
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Is sin [x] a periodic function
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NO
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"You need a perfect strategy to clear JEE more than knowledge " |
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Aug 2008 12:06:13 IST
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yes,it is repeated after a period of 2
rate me if it is helpful
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Aug 2008 22:30:49 IST
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YES BROS.......BUT THE PERIOD IS 1 NOT 2PI
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 21 Aug 2008 22:59:25 IST
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No it is NOT periodic.
@shanaditya..........
if the period was 1 then f(x) would've been equal to f(x+1) for ALL x ....i.e. sin[x] = sin[x+1]
But this fails at at least one point x=1/2.
At x=1/2,we get
sin[0.5] = sin [1.5]
sin0 = sin1
0 = sin1.........which is absurd.
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 22 Aug 2008 12:30:43 IST
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but nitish 971 , it is periodic after 2
it means if f[x]=sinx therefore f[x+2 ]=sin[x+2 ]
therefore
f[x]=f[x+2 ] which is always true in case of sinx
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 22 Aug 2008 12:38:00 IST
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NO SIN MOD X IS NON PERIODIC FUNCTION BETWEEN pi/2 TO -pi/2OUT OF THIS LIMIT IT IS PRIODIC WITH PERIOD WITH 2 pi
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 22 Aug 2008 15:08:07 IST
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@coolguy_2008
The function is f(x)= sin[x] where [.] denotes the greatest integer function!
It is NOT sinx.
f(x)=f(x+2 ) is true for sinx but not for sin[x].
For sin[x],
at x=0,
f(x)= sin[0] = 0.
f(x+2 )= sin[0+2 ] = sin[6.28] = sin6 which is not equal to 0!!
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 18:57:41 IST
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yes it is periodic with period 1/2. as the period of [x] is 1 and period of sinx is .
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 19:02:06 IST
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[.] is not fractiona part it is greatest integer........and gif is not periodic....
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 19:04:15 IST
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yes, sin x repeats at 2npie
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Anchal |
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 21:43:03 IST
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it is periodic wid period 1..
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IMPOSSIBLES ARE OFTEN UNTRIED... |
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 21:55:32 IST
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NO IT ISNT!!
Read the earlier posts.
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Success is 99% hard work and 1% hard work. |
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 22:13:24 IST
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you jst hav to sketch the graph of sin x, and u''ll see that IT REPEATS AFTER AN INTERVAL OF 2n PIE. arey its an understood fact that 30 degree is same as (360+30)degree, which goes on every time you complete on revolution around the origin. the values repeat............................... I CAN BET ON THAT
rate me if i'm right, as i alwaz am
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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Aug 2008 22:17:31 IST
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