Marcus Neale Goh Zheng Jie's answer to universe's Secondary 3 A Maths Singapore question.
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I hope this solution is clear. Feel free to clarify if you still have doubts or if you think I may have made a mistake.
Date Posted:
4 years ago
Calculus is not part of the sec 3 syllabus. This whole exercise is clearly on discriminant and the nature of roots so you should've used that to solve the 2nd part instead.
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