Tham KY's answer to John's Junior College 1 H1 Maths Singapore question.
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(b) might have error in question...
Date Posted:
4 years ago
I think it should be y=x^2-4?
If is y=x^2-4, then it is just the region bounded between y=0 and the curve, the x=0 is not needed, else it confuses us to choose the Left or the Right region... I submitted a solution with assumptions... you check it out...
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