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secondary 3 | A Maths
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Yang li shuang
Yang Li Shuang

secondary 3 chevron_right A Maths chevron_right Singapore

Hi please help with part i. and what does part iii means?

Date Posted: 3 years ago
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Aurora
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23 answers (Tutor Details)
1st
Discriminant needs to be lesser than 0, as this means that when the equation equals 50, there is no real roots, symbolising that there is no value of x that results in the height being 50meter.

For part (iii), just say that “since c=20, which is lesser than 30, the ball cannot reach the height of 50meters.