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secondary 3 | A Maths
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Piranha
Piranha

secondary 3 chevron_right A Maths chevron_right Singapore

Need help for part a

Date Posted: 4 years ago
Views: 192

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Heng Hong Hwee
Heng Hong Hwee's answer
15 answers (A Helpful Person)
1st
In this case, where there are no real roots, we cannot use the concept of symmetry in quadratic functions to find the max/min value. Instead, we have to complete the square and use the a(x-k)+h to find the max point (since its a sad face quadratic) and then find the maximum value ( y value of maximum point)