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secondary 3 | A Maths
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idununderstandasinglething
Idununderstandasinglething

secondary 3 chevron_right A Maths chevron_right Singapore

alpha beta

Date Posted: 4 years ago
Views: 228

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Wilson Tan
Wilson Tan's answer
6 answers (A Helpful Person)
1st
Use quadratic formula. Since there didn't specify where alpha is large, randomly assign both roots to alpha and beta.
Boy Mow Chau
Boy Mow Chau
4 years ago
mistake in calculation of roots …
… where it is written sqrt(72), should be sqrt(8) instead.
… so, roots should be
1+[(sqrt(2))/2] and 1-[(sqrt(2))/2].
Wilson Tan
Wilson Tan
4 years ago
Thanks!!!
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Boy Mow Chau
Boy Mow Chau's answer
317 answers (Tutor Details)
I believe that the "proper" way to solve these alpha beta type of questions is to do it without having to find the actual roots.