標題:
polynomials2
發問:
as follows~~as follows~~as follows~~ 圖片參考：http://i256.photobucket.com/albums/hh182/zilu_photo/sshot-2010-02-20-01-04-50.png
by factorize 210 , we have 2,3,5,7, so the roots are 2,3,5,7 when a = 2 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(2^2-3^2)(2^2-5^2)(2^2-7^2) =-4725 when a=3 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(3^2-2^2)(3^2-5^2)(3^2-7^2) =3200 when a=5 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(5^2-2^2)(5^2-3^2)(5^2-7^2) =-8064 when a=7 (a^2-b^2)(a^2-c^2)(a^2-d^2) =(7^2-2^2)(7^2-3^2)(7^2-5^2) =43200//
其他解答:63D0B758E2D502CC
polynomials2
發問:
as follows~~as follows~~as follows~~ 圖片參考：http://i256.photobucket.com/albums/hh182/zilu_photo/sshot-2010-02-20-01-04-50.png
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最佳解答:by factorize 210 , we have 2,3,5,7, so the roots are 2,3,5,7 when a = 2 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(2^2-3^2)(2^2-5^2)(2^2-7^2) =-4725 when a=3 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(3^2-2^2)(3^2-5^2)(3^2-7^2) =3200 when a=5 , (a^2-b^2)(a^2-c^2)(a^2-d^2) =(5^2-2^2)(5^2-3^2)(5^2-7^2) =-8064 when a=7 (a^2-b^2)(a^2-c^2)(a^2-d^2) =(7^2-2^2)(7^2-3^2)(7^2-5^2) =43200//
其他解答:63D0B758E2D502CC
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