2013 A-level H1 Mathematics (8864) Question 1 Suggested Solutions

All solutions here are SUGGESTED. Mr. Teng will hold no liability for any errors. Comments are entirely personal opinions.

Since equation has no real roots, Discriminant < 0

(k-2)^{2} - 4(2k+1) < 0

k^{2} - 12k < 0

\therefore, 0 < k < 12

KS Comments

A very simple question that test student on their understanding of discriminant.

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