Tham KY's answer to Jessica's Secondary 2 Maths question.

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Tham KY
Tham Ky's answer
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For your reference...
There might be an easier way, can't think of right now...
Jessica
Jessica
6 years ago
Thanks for your help!! anyway can it be solved by inequation? I think I nearly got the answer using inequation...
Tham KY
Tham KY
6 years ago
I used GC to get min max of y then place into inequality, don't think it is allowed in Sec 2...
BTW, what level are you in? Don't think secondary 2 learn differentiation or can use GC (graphical calculator) ...
Jessica
Jessica
6 years ago
Ermm... Actually I m a senior 3 student.. Coz I just started to use this apps and I didn't notice that there's an adjustment of level at first...