´óѧרҵÊÔ¾í¡¶Á¿×ÓÁ¦Ñ§¿¼ÊÔÊÔ¾í¡· Àí¹¤´óѧ˶ʿÑо¿ÉúÈëѧ¿¼ÊÔÊÔÌâ(A¾í)
xx´óѧ2021Äê˶ʿÑо¿ÉúÈëѧ¿¼ÊÔÊÔÌ⣨A¾í£©
¿¼ÊÔ¿ÆÄ¿´úÂ룺
¿¼ÊÔ¿ÆÄ¿Ãû³Æ£ºÁ¿×ÓÁ¦Ñ§
£¨×Ü·Ö150·Ö£¬ÈýСʱ´ðÍ꣩ ¿¼Éú×¢Ò⣺1. Ç뽫´ðÌâдÔÚ´ð¾íÖ½ÉÏ£¬Ð´ÔÚÊÔ¾íÉÏÊÓΪÎÞЧ¡£
2£®¿¼ÊÔÎÞÐè´øÆäËüµÄÓþߡ£
Ò» ¡¢¼ò´ðÌ⣨ÿСÌâ10·Ö£¬¹²50·Ö£©
1£®²¨³¤Îª?µÄ¹â£¬ÇóÆä¹â×ÓµÄÄÜÁ¿¡£ 2£®²¨º¯Êý?(r,t)µÄͳ¼ÆÒâÒå¡£
???F1??3£®Ö¤Ã÷£º??[F,H]¡£
dt?ti??±íÏóÖУ¬Çó̬??4. ÔÚ×ø±êx?dF2?3??sin?x?µÄ±íʾ¡£ a?a??zÊÇPauliËã·û¡£ ?yºÍ??z??y???y??z?0£¬ÆäÖÐ?5£®Ö¤Ã÷£º?¶þ¡¢¼ÆËãÌ⣨ÿСÌâ20·Ö£¬¹²100·Ö£©
1.ÖÊÁ¿ÎªmµÄÁ£×ÓÔÚһάÎÞÏÞÉîÊÆÚåÖÐÔ˶¯£¬ÊÆÄÜU(x)??£¨1£©Äܼ¶Óë¹éÒ»»¯²¨º¯Êý£»
?0,0?x?aÊÔÇó£º
??,x?0»òx?a?ÔÚÄÜÁ¿±íÏóÖеľØÕóÔª¡£ £¨2£©×ø±êËã·ûx2.ÉèÇâÔ×Ó´¦ÓÚ̬?nlm(r,?,?)??£¨1£©C£»
?R21(r)Y1?1(?,?)?£¬ÆäÖÐCÊdz£Êý£¬ÊÔÇó£º
?CR(r)Y(?,?)??22?32??e????e??¡£ £¨2£©´Å¾ØM??L?SµÄz·ÖÁ¿µÄÆÚÍûÖµMz2mm??3. ¶ÔһάÏßÐÔгÕñ×Ó£¬Éèa11??i?p?)ºÍa?????i?p?)£¬(?x(?xÆäÖÐ??22m?1ºÍ??£¬Çó£º ?m???,a?]£» £¨1£©[a?n?En,E?(n?)??,n?0,1,2,?£¬Çóa?nºÍa??n¡£ ??a?n¡¢a£¨2£©ÉèHnn
?12
?????EDrcos?£¬ÒÑ4. һת¶¯¹ßÁ¿ÎªI¡¢µçż¼«¾ØΪDµÄ¿Õ¼äת×Ó£¬ÉèÑØz·½Ïò¼ÓÉϵ糡E£¬¼´Î¢ÈÅHÖªY00(?,?)?1ºÍY10(?,?)?3cos?£¬ÊÔÇóÆä»ù̬ÄÜÁ¿µÄ£º
4?4?£¨1£©Ò»¼¶ÐÞÕý£» £¨2£©¶þ¼¶ÐÞÕý¡£
5. ÓÉ2¸öȫͬÁ£×Ó×é³ÉµÄϵͳ£¬¼ÙÉèÁ£×Ó¼äÎÞÏ໥×÷Ó㬶øÇÒÖ»ÓÐ3¸öµ¥Á£×Ó̬?¡¢?ºÍ?£¨¾ùÒѹéÒ»»¯£©£¬¾ÍÒÔ϶þÖÖÇé¿ö£¬ÇóÌåϵ¿ÉÄܵĹéÒ»»¯Ì¬º¯Êý£º £¨1£©²£É«×Ó£» £¨2£©·ÑÃ××Ó¡£