9Â¥: Originally posted by xuyx_78 at 2012-07-07 15:43:49
µ±È»ÁË!¾ÙÒ»¸ö¼òµ¥µÄÀý×Ó:$\lim_{x\rightarrow\infty}\frac{\sin x}{x}=0$,µ«Èô½«sinx Ö±½Ó»»³ÉÆäµÈ¼ÛÎÞÇîСÁ¿x,Ôò$\lim_{x\rightarrow\infty}\frac{\sin x}{x}=\lim_{x\rightarrow\infty}\frac{ x}{x}=1$,ÕâÏÔÈ»ÊÇ ...

2Â¥: Originally posted by onion113 at 2012-07-06 16:45:11
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3Â¥: Originally posted by xuyx_78 at 2012-07-06 18:10:12
x->0+ʱ,2(x+1)Óëarctan1/x¶¼²»ÊÇÎÞÇîСÁ¿,ÔõôÄÜÓõȼÛÎÞÇîСÁ¿´ú»»ÄØ?Çó¼«ÏÞÖеȼÛÎÞÇîСÁ¿´ú»»Ê±:·Ö×Ó»ò·ÖĸµÄÒòʽÈç¹ûÊÇÎÞÇîСÁ¿,Ôò¿ÉÒÔÎÞÌõ¼þ´ú»»,³ý´ËÍâ,Ä㻻ʱ¶¼ÒªÐ¡ÐÄ,²»Ò»¶¨ÄÜÖ±½Ó´ú»»....

4Â¥: Originally posted by onion113 at 2012-07-07 10:15:09
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5Â¥: Originally posted by xuyx_78 at 2012-07-07 15:29:19
µ±È»ÁË!¾ÙÒ»¸ö¼òµ¥µÄÀý×Ó:\mathrm{lim}\limit{x\rightarrow\infinity}=0,µ«Èç¹ûÓý«sin xÖ±½Ó´ú»»Îªx,Ôò½ø:\mathrm{lim}\limit{x\rightarrow\infinity}\frac{\sin x}{x}=\mathrm{lim}\limit{x\rightarrow\infinity ...

5Â¥: Originally posted by xuyx_78 at 2012-07-07 15:29:19
µ±È»ÁË!¾ÙÒ»¸ö¼òµ¥µÄÀý×Ó:\mathrm{lim}\limit{x\rightarrow\infinity}=0,µ«Èç¹ûÓý«sin xÖ±½Ó´ú»»Îªx,Ôò½ø:\mathrm{lim}\limit{x\rightarrow\infinity}\frac{\sin x}{x}=\mathrm{lim}\limit{x\rightarrow\infinity ...

4Â¥: Originally posted by onion113 at 2012-07-07 10:15:09
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4Â¥: Originally posted by onion113 at 2012-07-07 10:15:09
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