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Fantezi Cebir => Analiz-Cebir => Konuyu başlatan: stuart clark - Eylül 18, 2011, 01:34:17 ös
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Q: Given a,b,c and d ε R satisfying a+b=8 ; ab+c+d=23 ; ad+bc = 28 ; cd = 12 , Find value of following
i) a+b+c+d =
ii) ab+cd =
iii) ac+bd =
iv) ab =
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I can give a solution set in Z and it is easy.One must proof whether there is another solution(s) in R or not.
Using c.d = 12 then c = 4 , d = 3 , a = 4, b = 4 or c = 3 , d = 4 , a = 4, b = 4
c.d = 12 then c = 6, d = 2 , a =3 , b = 5 or c = 2, d = 6 , a = 5 , b = 3