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secondary 4 | A Maths
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MM
MM

secondary 4 chevron_right A Maths chevron_right Singapore

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Date Posted: 4 years ago
Views: 211
Eric Nicholas K
Eric Nicholas K
4 years ago
I look at this tonight if no one responds by 4 am. Remind me though, I might forget.
MM
MM
4 years ago
Ok sir. Thank you
Eric Nicholas K
Eric Nicholas K
4 years ago
Plan changed. Sending you in 2 min.

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Eric Nicholas K
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5997 answers (Tutor Details)
1st
This is what you should be considering. Take note that integrals for regions below a curve will give you a negative value, so we must extract its value without the negative sign to talk about its area. Here, I do so by introducing modulus to the entire integral for the part below the x-axis.
MM
MM
4 years ago
But sir answer is 10/3
Eric Nicholas K
Eric Nicholas K
4 years ago
Hmm...

I redo later on a separate piece of paper when I return
Eric Nicholas K
Eric Nicholas K
4 years ago
Never mind, I am getting paranoid.

I wrote part a as -1/100 (x - 5)^2 + 1/4 correctly.

And I actually wrote -1/100 (x - 5)^2 + 4 in the second part.

I redo everything for you later.
MM
MM
4 years ago
Thank you sir. I got it.
MM
MM
4 years ago
Sir , Upper area 5/3
Lower area 5/3
Thank you sir
Eric Nicholas K
Eric Nicholas K
4 years ago
I go redo the integration later
MM
MM
4 years ago
Thank you sir
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