Lee Jin Yong Zach's answer to Georgia Jansen's Secondary 4 A Maths Singapore question.

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Lee Jin Yong Zach
Lee Jin Yong Zach's answer
4 answers (Tutor Details)
1st
The idea is to identify whether each part of the dydx was positive or negative. One of the tricky part is e^x where if you actually try to graph it out, you realized that e^x is always positive if x>0