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secondary 4 | A Maths
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Kathy
Kathy

secondary 4 chevron_right A Maths chevron_right Singapore

Thank you

Date Posted: 4 years ago
Views: 211
Eric Nicholas K
Eric Nicholas K
4 years ago
Seen, wait
Eric Nicholas K
Eric Nicholas K
4 years ago
This is integration
Kathy
Kathy
4 years ago
Thank you
Kathy
Kathy
4 years ago
Ok
Eric Nicholas K
Eric Nicholas K
4 years ago
Has your school touched on integration yet? Or even differentiation? These techniques are needed for these type of questions.
Eric Nicholas K
Eric Nicholas K
4 years ago
If this is meant to be a coordinate geometry question and you have not learnt differentiation yet, you can skip the area of region III.
Eric Nicholas K
Eric Nicholas K
4 years ago
I will return to do your vectors question after 12 am if no one has already answered yet.

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Tong Woei Horng
Tong Woei Horng's answer
385 answers (Tutor Details)
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Eric Nicholas K
Eric Nicholas K
4 years ago
Area for part II is 0.5 times (a - 1) times (ae^a - e^a) since (e^a - ae^a) is the y-coordinate of R which is negative, so we must make it positive first.

Area of I is 1/2 x 1 x e^a, not 1/2 x 1 x a, since the y-coordinate of P is e^a, not a.
Tong Woei Horng
Tong Woei Horng
4 years ago
Thks Bro!For part II,completely forgotten that y-coordinate of R is negative,thks for reminding!As for part I,I have accidentlly taken the x-coordinate of P instead of the y-coordinate of P,thks for pointing out!Cheers!
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Tong Woei Horng
Tong Woei Horng's answer
385 answers (Tutor Details)
Corrected version
Kathy
Kathy
4 years ago
Do U know how to account?
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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Done. Integration is needed to find the area of region III.