#1
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µÃÕ⡳ÁÔµÔ¤ÃѺ
1)$\sec^2 \theta+\tan \theta-1=0$
Áѹ¨Ðä´é¤ÓµÍº à»ç¹ $\theta=0 ^{\circ},180^{\circ},360^{\circ},135^{\circ},315^{\circ} $ »Å.ÇԸբͧ¼Á¤×Í á¤èà»ÅÕè¹$\sec^2 \theta$ à»ç¹ $\tan^2 \theta +1$ ¤ÃѺ
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I think you're better than you think you are. 07 ÊÔ§ËÒ¤Á 2008 20:41 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ RETRORIAN_MATH_PHYSICS |
#2
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á¹ÐãËéÅͧµÃǨ¤ÓµÍº´ÙÍÕ¡¤ÃÑ駤ÃѺ
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¤¹ä·ÂÃèÇÁã¨ÍÂèÒãªéÀÒÉÒÇÔºÑµÔ ½Ö¡¾ÔÁ¾ìÊÑÅѡɳìÊÑ¡¹Ô´ ªÕÇÔµ(¤¹µÍºáÅФ¹¶ÒÁ)¨Ð§èÒ¢Öé¹àÂÍÐ (¨ÃÔ§æ¹Ð) Stay Hungry. Stay Foolish. |
#3
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¢Íº¤Ø³¤ÃѺ¾Õè ¢Í§§èÒÂæ áµè¼ÁÃÕºä»Ë¹èÍÂ(ι) ÊÃØ»áÅéÇ¡çä´é·Ø¡¤ÓµÍº
¼ÁÂѧÇèÒÍÂÙèäÁèä´éãªéÇÔ¸Õ¡¡ÓÅѧÊͧ«Ñ¡Ë¹èÍÂÁѹµéͧä´é·Ø¡¤ÓµÍºÊÔ
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I think you're better than you think you are. |
#4
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¼Á¡çä´é¤ÓµÍºàËÁ×͹¤Ø³ RETRORIAN_MATH_PHYSICS
àÅÂà¢Õ¹¤ÓµÍºã¹ÃÙ»·ÑèÇä»ÁÒãËé´ÙàÅè¹ÊÓËÃѺ¤¹·Õèʹ㨤ÃѺ $\theta$ = $n\pi $ , $(n- \frac {1}{4})\pi $ â´Â $n \in I $ |
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