Skip navigation
(727)
[Çʵ¶] óÀ½ ¿À½Ã´Â ºÐÀ»¡¦
(228)
(±¤°í) ´ÜÅë¹ý ½Ã´ëÀÇ ÀΡ¦
¹Ù·Î°¡±âÆíÁý
ÀÚÀ¯°Ô½ÃÆÇ
ÇÑÁÙ
QnA
Job
Life
¾÷üȫº¸
DIY
¾ð¹Ú½Ì
NAS
µö·¯´×
°¡»óÈ
Çϵå¿þ¾î
³×Æ®¿÷
RAID
°ÁÂ
ÀÚ·á
BMT
ÈÆÈÆ
ÆǸÅ
±¸¸Å
°ßÀû
ÇØ¿Ü
Ãâ¼®
¹Ù·Î
¹Ù·Î°¡±âÆíÁý
member_id
password
Auto
Login
ȸ¿ø°¡ÀÔ
¾ÆÀ̵ðã±â
¸ñ·Ï
¾²±â
¸ñ·Ï
ÁøÆø ±×¸²±¸Çϴ¹æ¹ýÁ» ¾Ë·ÁÁÖ¼¼¿ä.
ÇÑŵ¿
2009-10
2009-10-31 11:06:53
Á¶È¸ 9161 Ãßõ 0
Çб³¿¡¼ ¸ÖƼ¹Ìµð¾î °ú¸ñÀ» µè´Âµ¥¿ä.
°íµù´ë µè´ø ¼öÇÐ? ¹°¸®? ´Ù ±î¸Ô¾î¼...
y=10cos(2ÆÄÀÌt+10ÆÄÀÌ)¿¡¼
ÁøÆø, Áøµ¿¼ö, À§»ó, radian requency¸¦ ±¸ÇÐ ±×¸®´Â ¹æ¹ý Á» ¾Ë·Á ÁÖ¼¼¿ä.
¾Æ´Â °Å¸¸ÀÌ¶óµµ ¾Ë·ÁÁÖ¼¼¿ä.
ªÀº±Û Àϼö·Ï ½ÅÁßÇÏ°Ô.
Á¤Èñ¼·
2009-10
cos x ±×·¡ÇÁ°¡
ÁÖ±â 2 pi, ÃÖ´ë 1 ÃÖ¼Ò -1 ÀÌ´Ï
10 cos 2x ´Â
ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 À̱¸¿ä.
10 cos ( 2x + 10 pi ) ´Â
ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 Àº ¶È°°Àºµ¥ x = 0 ºÎÅÍ ½ÃÀÛÀ̶ó¸é 10 cos ( 2x ) ÀÇ ±×·¡ÇÁ¸¦ -10 pi ºÎÅÍ ±×¸®½Ã¸é µË´Ï´Ù.
Áøµ¿¼ö (frequency) ´Â 1 / T À̴ϱî 1 / pi [Hz] °¡ µÇ°Ú³×¿ä. À§»óÇÏ°í ¶óµð¾È ¾î¼±¸´Â Àß ¸ð¸£°Ú±º¿ä ^^;
cos x ±×·¡ÇÁ°¡ ÁÖ±â 2 pi, ÃÖ´ë 1 ÃÖ¼Ò -1 ÀÌ´Ï 10 cos 2x ´Â ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 À̱¸¿ä. 10 cos ( 2x + 10 pi ) ´Â ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 Àº ¶È°°Àºµ¥ x = 0 ºÎÅÍ ½ÃÀÛÀ̶ó¸é 10 cos ( 2x ) ÀÇ ±×·¡ÇÁ¸¦ -10 pi ºÎÅÍ ±×¸®½Ã¸é µË´Ï´Ù. Áøµ¿¼ö (frequency) ´Â 1 / T À̴ϱî 1 / pi [Hz] °¡ µÇ°Ú³×¿ä. À§»óÇÏ°í ¶óµð¾È ¾î¼±¸´Â Àß ¸ð¸£°Ú±º¿ä ^^;
ALpha
2009-10
2*pi*t + 10*pi °¡ À§»ó ¾Æ´Ñ°¡¿ë ?
±×¸®°í radian requency ´Â ¾Æ¸¶ radian frequency °°Àºµ¥ °¢Áøµ¿¼ö¶ó°í
ÁֱⰡ 2pi´Ï±î T·Î ³ª´©¸é 2pi / (1/pi) ´Ï±î 2pi^2 .. °¡ °¢Áøµ¿¼öÀΰ¡¿ä ?
¸Â´ÂÁö Ʋ¸®´ÂÁö ¸ô¶ó¿ä .. ÈëÈë
2*pi*t + 10*pi °¡ À§»ó ¾Æ´Ñ°¡¿ë ? ±×¸®°í radian requency ´Â ¾Æ¸¶ radian frequency °°Àºµ¥ °¢Áøµ¿¼ö¶ó°í ÁֱⰡ 2pi´Ï±î T·Î ³ª´©¸é 2pi / (1/pi) ´Ï±î 2pi^2 .. °¡ °¢Áøµ¿¼öÀΰ¡¿ä ? ¸Â´ÂÁö Ʋ¸®´ÂÁö ¸ô¶ó¿ä .. ÈëÈë
¼ÅÂÀ±
2009-10
ÁøÆø(amplitude): 10
Áøµ¿¼ö(frequency): (2*pi)/(2*pi)=1
radian frequency: 2*pi*Áøµ¿¼ö=2*pi
À§»ó(phase): °©ÀÚ±â Á¤È®ÇÏ°Ô »ý°¢ÀÌ ¾È³ª³×¿ä ¹®Á¦¿¡¼´Â 10*pi °¡ ´äÀÌ µÉ°Í °°½À´Ï´Ù.
±×¸²Àº 10¿¡¼ ½ÃÀÛÇؼ -10À¸·Î ³»·Á°¡´Â cos±×·¡ÇÁ¸¦ ±×´ë·Î ±×¸®½Ã¸é µË´Ï´Ù.
10*pi¸é ÁÖ±âÀÇ ¹è¼ö¸¸Å À̵¿À̱⠶§¹®¿¡ ÆÄÇü¿¡´Â º¯È°¡ ¾ø½À´Ï´Ù.
½Ã°£ 0.25À϶§ 0, 0.5À϶§ -10À» ±×¸®½Ã°í 1À϶§ ´Ù½Ã ÁøÆø10À» ±×¸®½Ã¸é µË´Ï´Ù.
ÁøÆø(amplitude): 10 Áøµ¿¼ö(frequency): (2*pi)/(2*pi)=1 radian frequency: 2*pi*Áøµ¿¼ö=2*pi À§»ó(phase): °©ÀÚ±â Á¤È®ÇÏ°Ô »ý°¢ÀÌ ¾È³ª³×¿ä ¹®Á¦¿¡¼´Â 10*pi °¡ ´äÀÌ µÉ°Í °°½À´Ï´Ù. ±×¸²Àº 10¿¡¼ ½ÃÀÛÇؼ -10À¸·Î ³»·Á°¡´Â cos±×·¡ÇÁ¸¦ ±×´ë·Î ±×¸®½Ã¸é µË´Ï´Ù. 10*pi¸é ÁÖ±âÀÇ ¹è¼ö¸¸Å À̵¿À̱⠶§¹®¿¡ ÆÄÇü¿¡´Â º¯È°¡ ¾ø½À´Ï´Ù. ½Ã°£ 0.25À϶§ 0, 0.5À϶§ -10À» ±×¸®½Ã°í 1À϶§ ´Ù½Ã ÁøÆø10À» ±×¸®½Ã¸é µË´Ï´Ù.
¸ù¸ù
2009-11
wolfram alpah ¿¡ °¡¼ ¼ö½Ä³Ö¾îº¸¼¼¿ä.
±×·¡ÇÁ±îÁö ´Ù ³ª¿É´Ï´Ù
http://www.wolframalpha.com/input/?i=y%3D10cos%282
*pi*t%2B10*pi%29
¹é¹®ÀÌ ºÒ¿©ÀÏ°ß
wolfram alpah ¿¡ °¡¼ ¼ö½Ä³Ö¾îº¸¼¼¿ä. ±×·¡ÇÁ±îÁö ´Ù ³ª¿É´Ï´Ù http://www.wolframalpha.com/input/?i=y%3D10cos%282*pi*t%2B10*pi%29 ¹é¹®ÀÌ ºÒ¿©ÀÏ°ß
ÀåÅÂÁÖ
2009-11
http://www.walterzorn.com/grapher/grapher_e.htm
±èÇöÈ£´ÔÀÌ ÃßõÇÑ »çÀÌÆ®¿Í ºñ½ÁÇÑ »çÀÌÆ®ÀÔ´Ï´Ù.
http://www.walterzorn.com/grapher/grapher_e.htm ±èÇöÈ£´ÔÀÌ ÃßõÇÑ »çÀÌÆ®¿Í ºñ½ÁÇÑ »çÀÌÆ®ÀÔ´Ï´Ù.
·Î±×ÀÎ ÇÏ½Ã¸é ´ñ±ÛÀ» ³²±æ ¼ö ÀÖ½À´Ï´Ù
¸ñ·Ï
¾²±â
¸ñ·Ï
QnA
¾²±â
4895/5682
¹øÈ£
Á¦¸ñ
Page 4895/5682
±Û¾´ÀÌ
³¯Â¥
Á¶È¸
̵̧
[Çʵ¶] óÀ½ ¿À½Ã´Â ºÐÀ» À§ÇÑ ¾È³»
(727)
Á¤ÀºÁØ1
2014-05
4951917
0
[Çʵ¶] óÀ½ ¿À½Ã´Â ºÐÀ» À§ÇÑ ¾È³»
(727)
2014-05 4951917
1
Á¤ÀºÁØ1
(±¤°í) ´ÜÅë¹ý ½Ã´ëÀÇ ÀÎÅͳݰ¡ÀÔ °¡À̵å(ver2.0)
(228)
¹é¸Þ°¡
2015-12
1488511
25
(±¤°í) ´ÜÅë¹ý ½Ã´ëÀÇ ÀÎÅͳݰ¡ÀÔ °¡À̵å(¡¦
(228)
2015-12 1488511
1
¹é¸Þ°¡
15744
800 Á¡ ³Ñ¾ú´Âµ¥ ÀåÅÍ ±Û¾²±â°¡ ¾ÊµÅ´Â ÀÌÀ¯°¡ ?
(2)
°¡ºü·Î±¸³ª
2010-05
9154
0
800 Á¡ ³Ñ¾ú´Âµ¥ ÀåÅÍ ±Û¾²±â°¡ ¾ÊµÅ´Â ÀÌ¡¦
(2)
2010-05 9154
1
°¡ºü·Î±¸³ª
15743
[Áú¹®]´Ü¼ø Æ÷¸Ë º¯È¯ ¶§¹®¿¡ µà¾óÀ» °í·ÁÇÏ´Â Ãʺ¸ÀÚ°¡...
(3)
¹Ú°Ç¿í
2003-07
9154
13
[Áú¹®]´Ü¼ø Æ÷¸Ë º¯È¯ ¶§¹®¿¡ µà¾óÀ» °í·Á¡¦
(3)
2003-07 9154
1
¹Ú°Ç¿í
15742
Multy OS¼³Ä¡¿¡ °üÇÑ Áú¹®
(6)
±èµµÇü
2003-04
9155
17
Multy OS¼³Ä¡¿¡ °üÇÑ Áú¹®
(6)
2003-04 9155
1
±èµµÇü
15741
Ȥ½Ã ÀÌ ¹ú·¹°¡ ¹«¾ùÀÎÁö ¾Æ½Ã´ÂºÐ °è½Å°¡¿ä?
(10)
õÁö¹«·á
2018-07
9156
0
Ȥ½Ã ÀÌ ¹ú·¹°¡ ¹«¾ùÀÎÁö ¾Æ½Ã´ÂºÐ °è½Å°¡¡¦
(10)
2018-07 9156
1
õÁö¹«·á
15740
¿ÖÀÚµ¿Â÷ ´ë½¬ º¸µå´Â »Ê·Ï Æ¢¾î³ª¿Í ÀÖ³ª¿ä?
(10)
Ǫ¸ªÀÌ
2009-12
9156
0
¿ÖÀÚµ¿Â÷ ´ë½¬ º¸µå´Â »Ê·Ï Æ¢¾î³ª¿Í ÀÖ³ª¡¦
(10)
2009-12 9156
1
Ǫ¸ªÀÌ
15739
secuprint »èÁ¦ÇÒ¼ö ÀÖÀ»±î¿ä?
(1)
song05
2018-01
9156
0
secuprint »èÁ¦ÇÒ¼ö ÀÖÀ»±î¿ä?
(1)
2018-01 9156
1
song05
15738
ÆÄ¿ö µÎ°³ »ç¿ë °¡´ÉÇÑÁö¿ä?
(11)
ZEBE
2010-04
9156
0
ÆÄ¿ö µÎ°³ »ç¿ë °¡´ÉÇÑÁö¿ä?
(11)
2010-04 9156
1
ZEBE
15737
[Áú¹®] ¿Á¸ÅÆ® ¹× Àü±âÀåÆÇ·ù Àú·ÅÇÏ¸é¼ ¾µ¸¸ÇÑ Á¦Ç° ¾øÀ»±î¿ä.?
(7)
³ª³Ê¿ì¸®
2010-01
9156
0
[Áú¹®] ¿Á¸ÅÆ® ¹× Àü±âÀåÆÇ·ù Àú·ÅÇÏ¸é¼ ¡¦
(7)
2010-01 9156
1
³ª³Ê¿ì¸®
15736
[Ãßõ] ÀϺ» ±¸¸Å´ëÇà¾÷ü ÃßõÇØÁÖ¼¼¿ä.
(2)
ÀϹÝÀ¯Àú
2011-01
9156
0
[Ãßõ] ÀϺ» ±¸¸Å´ëÇà¾÷ü ÃßõÇØÁÖ¼¼¿ä.
(2)
2011-01 9156
1
ÀϹÝÀ¯Àú
15735
2000 ¾îµå¹ê½º¼¹ö¿¡¼ ÆÄƼ¼Ç¸ÅÁ÷»ç¿ë
(2)
ÀÌÁؼº
2003-07
9157
4
2000 ¾îµå¹ê½º¼¹ö¿¡¼ ÆÄƼ¼Ç¸ÅÁ÷»ç¿ë
(2)
2003-07 9157
1
ÀÌÁؼº
15734
Ç¥±â500wÀÇ »½ÆÄ¿ö¿¡ gtx1060ÀåÂøÇϸé ÅÍÁú±î¿ä?
(9)
ÀÓµ¿Çõ
2017-01
9157
1
Ç¥±â500wÀÇ »½ÆÄ¿ö¿¡ gtx1060ÀåÂøÇϸé ÅÍ¡¦
(9)
2017-01 9157
1
ÀÓµ¿Çõ
15733
. TYAN Thunder2500°ú Wildcat 5110»ç¿ë °¡´ÉÇÑ°¡¿ä?
(4)
¹ÚÁ¾´ë
2003-07
9157
11
. TYAN Thunder2500°ú Wildcat 5110»ç¿ë ¡¦
(4)
2003-07 9157
1
¹ÚÁ¾´ë
15732
Á¦¿Âº¸µå Áß¿¡¼ ¾î¶² º¸µå°¡ ¿À¹ö¿¡ °ÇÑ°¡¿ä?
(7)
õ±â¼®
2004-02
9158
24
Á¦¿Âº¸µå Áß¿¡¼ ¾î¶² º¸µå°¡ ¿À¹ö¿¡ °ÇÑ¡¦
(7)
2004-02 9158
1
õ±â¼®
15731
µ¿¿µ»ó ½ºÆ®¸®¹Ö...¼¹ö?¸¦ ±¸ÃàÇÒ¸¸ÇÑ ¼ÒÇÁÆ®¿þ¾î°¡ ÀÖ³ª¿ä?
(2)
½É´Ã
2013-07
9158
0
µ¿¿µ»ó ½ºÆ®¸®¹Ö...¼¹ö?¸¦ ±¸ÃàÇÒ¸¸ÇÑ ¼Ò¡¦
(2)
2013-07 9158
1
½É´Ã
15730
¿ïÆ®¶ó320Áö¿ø ½ºÄ«½Ã·Î ¹Ù²ãº¸·Á ÇÕ´Ï´Ù
(2)
À念¹Î
2003-07
9158
3
¿ïÆ®¶ó320Áö¿ø ½ºÄ«½Ã·Î ¹Ù²ãº¸·Á ÇÕ´Ï´Ù
(2)
2003-07 9158
1
À念¹Î
15729
ÇÚµåÆù¿¡ micro SD ÀνĿ뷮...
(6)
±è°Ç¿ì
2010-06
9158
0
ÇÚµåÆù¿¡ micro SD ÀνĿ뷮...
(6)
2010-06 9158
1
±è°Ç¿ì
15728
¹é¶óÀÌÆ® ±³Ã¼ ºñ¿ëÀÌ ¸¹ÀÌ µé±î¿ä?
(6)
¹®º´Ã¤
2009-01
9159
4
¹é¶óÀÌÆ® ±³Ã¼ ºñ¿ëÀÌ ¸¹ÀÌ µé±î¿ä?
(6)
2009-01 9159
1
¹®º´Ã¤
15727
[re] Å×½ºÆ® °á°ú...
±è¿µ±â
2003-03
9159
4
[re] Å×½ºÆ® °á°ú...
2003-03 9159
1
±è¿µ±â
15726
»ï¼º 840 ½Ã¸®Áî Á¤¸®Á» ºÎŹµå¸³´Ï´Ù
(3)
¹Ì¼ö¸Ç
2013-09
9159
0
»ï¼º 840 ½Ã¸®Áî Á¤¸®Á» ºÎŹµå¸³´Ï´Ù
(3)
2013-09 9159
1
¹Ì¼ö¸Ç
15725
óÀ½ °Þ¾î º» À©µµ¿ì7 ÀνºÅç ¿¡·¯
(7)
¾Æ¸§´Ù¿î³ëÀ»
2013-12
9159
0
óÀ½ °Þ¾î º» À©µµ¿ì7 ÀνºÅç ¿¡·¯
(7)
2013-12 9159
1
¾Æ¸§´Ù¿î³ëÀ»
4891
4892
4893
4894
4895
(current)
4896
4897
4898
4899
4900
4891
4892
4893
4894
4895
(current)
¸ñ·Ï
¾²±â
sfl
Á¦¸ñ
³»¿ë
Á¦¸ñ+³»¿ë
ȸ¿ø¾ÆÀ̵ð
ȸ¿ø¾ÆÀ̵ð(ÄÚ)
À̸§
À̸§(ÄÚ)
stx
sop
and
or
°Ë»ö
ÁÖ±â 2 pi, ÃÖ´ë 1 ÃÖ¼Ò -1 ÀÌ´Ï
10 cos 2x ´Â
ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 À̱¸¿ä.
10 cos ( 2x + 10 pi ) ´Â
ÁÖ±â pi , ÃÖ´ë 10 ÃÖ¼Ò -10 Àº ¶È°°Àºµ¥ x = 0 ºÎÅÍ ½ÃÀÛÀ̶ó¸é 10 cos ( 2x ) ÀÇ ±×·¡ÇÁ¸¦ -10 pi ºÎÅÍ ±×¸®½Ã¸é µË´Ï´Ù.
Áøµ¿¼ö (frequency) ´Â 1 / T À̴ϱî 1 / pi [Hz] °¡ µÇ°Ú³×¿ä. À§»óÇÏ°í ¶óµð¾È ¾î¼±¸´Â Àß ¸ð¸£°Ú±º¿ä ^^;
±×¸®°í radian requency ´Â ¾Æ¸¶ radian frequency °°Àºµ¥ °¢Áøµ¿¼ö¶ó°í
ÁֱⰡ 2pi´Ï±î T·Î ³ª´©¸é 2pi / (1/pi) ´Ï±î 2pi^2 .. °¡ °¢Áøµ¿¼öÀΰ¡¿ä ?
¸Â´ÂÁö Ʋ¸®´ÂÁö ¸ô¶ó¿ä .. ÈëÈë
Áøµ¿¼ö(frequency): (2*pi)/(2*pi)=1
radian frequency: 2*pi*Áøµ¿¼ö=2*pi
À§»ó(phase): °©ÀÚ±â Á¤È®ÇÏ°Ô »ý°¢ÀÌ ¾È³ª³×¿ä ¹®Á¦¿¡¼´Â 10*pi °¡ ´äÀÌ µÉ°Í °°½À´Ï´Ù.
±×¸²Àº 10¿¡¼ ½ÃÀÛÇؼ -10À¸·Î ³»·Á°¡´Â cos±×·¡ÇÁ¸¦ ±×´ë·Î ±×¸®½Ã¸é µË´Ï´Ù.
10*pi¸é ÁÖ±âÀÇ ¹è¼ö¸¸Å À̵¿À̱⠶§¹®¿¡ ÆÄÇü¿¡´Â º¯È°¡ ¾ø½À´Ï´Ù.
½Ã°£ 0.25À϶§ 0, 0.5À϶§ -10À» ±×¸®½Ã°í 1À϶§ ´Ù½Ã ÁøÆø10À» ±×¸®½Ã¸é µË´Ï´Ù.
±×·¡ÇÁ±îÁö ´Ù ³ª¿É´Ï´Ù
http://www.wolframalpha.com/input/?i=y%3D10cos%282*pi*t%2B10*pi%29
¹é¹®ÀÌ ºÒ¿©ÀÏ°ß
±èÇöÈ£´ÔÀÌ ÃßõÇÑ »çÀÌÆ®¿Í ºñ½ÁÇÑ »çÀÌÆ®ÀÔ´Ï´Ù.