²é¿´: 691  |  »Ø¸´: 3

Lucy

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] ¸µÀïÒ¶±ä»»

ÈçÏÂͼµÄ³ÌÐòÓïÑÔ£¬Ôõô¸µÀïÒ¶±ä»»¸ø²»³ö½á¹ûÄØ£¿
ÆäÖÐ ³ÌÐòÖеÄf£¨t£©¾ÍÊÇÒ»¸ö¾ØÐ⨣¬g£¨t£©¾ÍÊǽ«f£¨t£©ÑÓÍØ
ºóµÄº¯Êý£¬¼ûµÚ¶þÕÅͼ¡£
ÏÈллÀ²£¡

LFGK8G]0X8S[6LR_X`A3S7U.jpg



SG7ZP)_J{~9KLZXTJLVE6N4.jpg
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

walk1997

½ð³æ (ÖøÃûдÊÖ)

ÖÜÆÚº¯ÊýΪʲôÓøµÁ¢Ò¶±ä»»£¿
Ó¦¸ÃÊÇÓøµÁ¢Ò¶¼¶ÊýÕ¹¿ª°É¡£¡£¡£
2Â¥2012-12-08 18:59:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xulianjing

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by walk1997 at 2012-12-08 18:59:47
ÖÜÆÚº¯ÊýΪʲôÓøµÁ¢Ò¶±ä»»£¿
Ó¦¸ÃÊÇÓøµÁ¢Ò¶¼¶ÊýÕ¹¿ª°É¡£¡£¡£

ÇëÎÊÄãÓжÔÒÑÖªº¯Êý½øÐиµÀïÒ¶¼¶ÊýÕ¹¿ªµÄ³ÌÐòÂð
3Â¥2013-10-14 21:52:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

walk1997

½ð³æ (ÖøÃûдÊÖ)

¸µÁ¢Ò¶¼¶ÊýÕ¹¿ªÖ±½ÓÓÃÄÚ²¿º¯Êý
Clear["Global`*"]
f[t_] := HeavisideTheta[t];
a = 1;
b = 2*10^-10;
FourierSeries[f[t], t, 3, FourierParameters -> {a, b}]
FourierCoefficient[f[t], t, n, FourierParameters -> {a, b}]
£­---------------
ÕâÀïµÄa¿ÉÄܲ»¶Ô ÓÐÒ»¸ö¹éÒ»»¯³£Êý checkÒ»ÏÂ
ÁíÍâ ¶ÔÓÚ²»ÄܽâÎöÇóµÄ  Ò²¿ÉÒÔ²ÉÓÃÊýÖµµÄº¯Êý
NFourierTransform ºÍ NFourierSeries
4Â¥2013-10-15 08:02:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Lucy µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 313Çóµ÷¼Á +4 ËÁÈþ·¡Ò¼22 2026-03-19 4/200 2026-03-21 17:33 by ColorlessPI
[¿¼ÑÐ] 296Çóµ÷¼Á +4 www_q 2026-03-20 4/200 2026-03-21 17:26 by ѧԱ8dgXkO
[¿¼ÑÐ] 265Çóµ÷¼Á +3 Jack?k?y 2026-03-17 3/150 2026-03-21 03:17 by JourneyLucky
[¿¼ÑÐ] 265Çóµ÷¼Á +9 ÁºÁºÐ£Ð£ 2026-03-17 9/450 2026-03-21 02:17 by JourneyLucky
[¿¼ÑÐ] ²ÄÁÏ 336 Çóµ÷¼Á +3 An@. 2026-03-18 4/200 2026-03-21 01:39 by JourneyLucky
[¿¼ÑÐ] ҩѧ383 Çóµ÷¼Á +3 ҩѧchy 2026-03-15 5/250 2026-03-20 22:11 by ÔÆÓÎÖØÑô
[¿¼ÑÐ] ÖÐÄÏ´óѧ»¯Ñ§Ñ§Ë¶337Çóµ÷¼Á +3 niko- 2026-03-19 6/300 2026-03-20 21:58 by luoyongfeng
[¿¼ÑÐ] Ò»Ö¾Ô¸ÎäÀí²ÄÁϹ¤³Ì348Çóµ÷¼Á +3 £þ^£þ©bº¹ 2026-03-19 4/200 2026-03-20 21:01 by zhukairuo
[¿¼ÑÐ] 295¸´ÊÔµ÷¼Á +8 ¼òľChuFront 2026-03-19 8/400 2026-03-20 20:44 by zhukairuo
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖÐũҵ071010£¬×Ü·Ö320Çóµ÷¼Á +3 À§À§À§À§À¤À¤ 2026-03-20 3/150 2026-03-20 20:38 by ѧԱ8dgXkO
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤×¨Ë¶µ÷¼Á +7 heming3743 2026-03-16 7/350 2026-03-20 19:31 by zhukairuo
[¿¼ÑÐ] 086500 325 Çóµ÷¼Á +3 Áì´øÐ¡ÐÜ 2026-03-19 3/150 2026-03-20 18:38 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] ²ÄÁÏѧ˶318Çóµ÷¼Á +5 February_Feb 2026-03-19 5/250 2026-03-19 23:51 by 23Postgrad
[¿¼ÑÐ] 320Çóµ÷¼Á0856 +3 ²»ÏëÆðÃû×Ö112 2026-03-19 3/150 2026-03-19 22:53 by ѧԱ8dgXkO
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼²©] 26²©Ê¿ÉêÇë +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by ÇáËɲ»ÉÙËæ
[¿¼ÑÐ] 301Çóµ÷¼Á +4 A_JiXing 2026-03-16 4/200 2026-03-17 17:32 by ruiyingmiao
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +6 ´ó»ðɽС»ðɽ 2026-03-16 8/400 2026-03-17 15:05 by ÎÞи¿É»÷111
[¿¼ÑÐ] 275Çóµ÷¼Á +4 Ì«Ñô»¨ÌìÌ쿪ÐÄ 2026-03-16 4/200 2026-03-17 10:53 by ¹¦·ò·è¿ñ
[¿¼ÑÐ] Ò»Ö¾Ô¸211 0703·½Ïò310·ÖÇóµ÷¼Á +3 ŬÁ¦·Ü¶·112 2026-03-15 3/150 2026-03-16 16:44 by houyaoxu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û