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#1
27 Á¡ÃÒ¤Á 2015, 16:39
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͹ؾѹ¸ì¢Í§¿Ñ§¡ìªÑè¹µÃÕ⡳ÁÔµÔáÅм¡¼Ñ¹
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1.⨷ÂìµÃÕ⡳ÁÔµÔ y=x tan(¡¡ÓÅѧÊͧ) x ¤ÓµÍºÁѹ¤×Í 2x tan x sec(¡¡ÓÅѧÊͧ) x + tan(¡¡ÓÅѧ2) x ¼ÁÃØéÇèÒµéͧãªé ˹éÒ dx ËÅѧ + ËÅѧ dx ˹éÒ *áµè¼Á§§µÃ§·Õ x dx tan(¡¡ÓÅѧÊͧ) x Âѧä§ãËéÁѹä´é 2x tan x sec(¡¡ÓÅѧÊͧ) x *¡ÒþÅÔ¡¾Åѹ¹Ô´Ë¹è͹͡¡ÃͺµÃ§¹Õé ¼Á·ÓäÁäè´é·Ø¡·Õ·ÓãËéàÃÕ¹äÁèà¢éÒ㨹Դ´ÕÂÇ¡é·ÓäÁèä´éàŤÃѺ* 2.⨷Â켡¼Ñ¹ y=sing (¡¡ÓÅѧ-1) (tan x) ¤ÓµÍºÁѹ¤×Í sec(¡¡ÓÅѧÊͧ) x Êèǹ ÃÙ· 1 - tan(¡¡ÓÅѧÊͧ) x µÃ§¹Õé¼ÁäÁèà¢éÒã¨àÅ ÃØéà¾Õ§ÇèÒ dx sin -1 > 1Êéèǹ ÃÙ· 1-(tan x^2) ¨Ò¡ÊÙµÃà·èÒ¹Ñé¹ dx tan x äÁèà¢éҨѢÑ鹵͹ à¾ÃÒзÓáÅéÇäÁèµÃ§¡Ñº¤ÓµÍº »Å.Âѧ䧡çªèǼÁÊÑ¡¹Ô´¹Ð¤ÃѺ 
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#2
27 Á¡ÃÒ¤Á 2015, 16:57
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$$\bigg(fog(x)\bigg)' = f'\bigg(g(x)\bigg)g'(x)$$
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Hope is what makes us strong. It's why we are here. It is what we fight with when all else is lost.
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