1ªº¤T¤è¥[¨ì30¤T¤è¬O¦h¤Ö?^¬O¤°»ò·N«ä?
(1)³]Á`©M¬°S¡AS=ax^4+bx^3+cx^2+dx+e¥Ox=0±oe=0¥Ox=1,2,3,4 ±o a+b+c+d=1 16a+8b+4c+2d=9 81a+27b+9c+3d=36 256a+64b+16c+4d=100¸ÑÁp¥ß¤èµ{²Õ±oa= 1/4 b=1/2 c=1/4 d=0¥Ox=30¥N¤J§Y¥i(2)¤½¦¡¸Ñ: (n(n+1)/2)^2(3)¥Î¿n¤À¤èªk
bubupin ¼g¹D:(1)³]Á`©M¬°S¡AS=ax^4+bx^3+cx^2+dx+e¥Ox=0±oe=0¥Ox=1,2,3,4 ±o a+b+c+d=1 16a+8b+4c+2d=9 81a+27b+9c+3d=36 256a+64b+16c+4d=100¸ÑÁp¥ß¤èµ{²Õ±oa= 1/4 b=1/2 c=1/4 d=0¥Ox=30¥N¤J§Y¥i(2)¤½¦¡¸Ñ: (n(n+1)/2)^2(3)¥Î¿n¤À¤èªk
²³æ¦a»¡1+2+3+4+..............+30=1*1+2*1+3*1+4*1+5*1+............+30*1¥»¨Ó¬Oªø«×1¤½¤À¡Ï2¤½¤À¡Ï¡D¡D¡D¡D¡Ï30¤½¤À²{¦b±N¥L¬Ý¦¨(ªø1¤½¤À¡A¼e1¤½¤À)¡A(ªø2¤½¤À¡A¼e1¤½¤À)¡A(ªø3¤½¤À¡A¼e1¤½¤À¡^......ªºªø¤è§Î³o¨Çªø¤è§Î¦b¥±®y¼Ð¥i¦X¦¨±µªñ±è§Î±¿n¡AÁ`©M¤Æ¦¨¤G¦¸¤èµ{¥H¦¹Ãþ±À¡A·í¥Ñ1¶}©lªº³sÄò¼Æ¤T¦¸¤èÁ`©M¡A¥i¥H³]¥|¦¸¤èµ{¨Ó¸Ñ§A¥i¥H¦b®aùØ¥ý¸Ñ¥X³sÄò¼Æªº¥¤è©M¤½¦¡¸Õ¸Õ¬Ý¦P¼Ë¤]¥i¸Ñ¥X³sÄò¼Æ¥|¦¸¤è¡A¤¦¸¤èÁ`©M¡D¡D¡Dªº¤èµ{¦¡¦U¶µ«Y¼Æ¡A±N¨ä¦]¦¡¤À¸Ñ¡A§Y¥iÂন¤½¦¡¸Ñ