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secondary 4 | A Maths
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Christmas MT
Christmas MT

secondary 4 chevron_right A Maths chevron_right Singapore

Hey can someone help me with (iii), Idk the exact method to prove the function only has one real root. I tried looking online but didn’t find much. Tqtq

Date Posted: 5 years ago
Views: 246
Mathaddict100
Mathaddict100
5 years ago
The method is to factorise the equation and obtain the roots each.
Mathaddict100
Mathaddict100
5 years ago
Or another way is that,once you factorise the equation,use discriminant to check whether you can get negative value for the other factor..These should conclude the function having one real root..
Christmas MT
Christmas MT
5 years ago
Thank you, I’d try the discriminant method.

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snell
Snell's answer
333 answers (A Helpful Person)
1st
if u still hv doubt, pls pose ur queries.
Christmas MT
Christmas MT
5 years ago
Oh yea the discrimination one, my bad I totally forgot abt it. I’d give it a go