CBSE Class 10 Answered
How to solve this application sum?
Asked by | 30 Apr, 2008, 05:19: PM
Expert Answer
α and β are the zeros of x2 - x + 1
α + β = - coefficient of x term / coefficient of x2 = 1 / 1 = 1
αβ = constant / coefficient of x2 = 1
α2 +β2 = (α +β )2 -- 2 αβ
= 12 - 2 * 1
= - 1
1 /α + 1/β = α + β / αβ
=1 / 1 = 1
Answered by | 30 Apr, 2008, 09:27: PM
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