Joshua Lim Jun Jie's answer to Bibi's Secondary 4 A Maths question.

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Joshua Lim Jun Jie
Joshua Lim Jun Jie's answer
18 answers (Tutor Details)
1st
First part
Bibi
Bibi
6 years ago
Thank you
Jiayang
Jiayang
6 years ago
a(ii) asked for interval so the answer should be
1 not the duration = 3s