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## Question

secondary 4 | A Maths
4 Answers Below

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##### Kathy2

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Thank

Date Posted: 3 months ago
Views: 18

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##### Eric Nicholas K's answer
3654 answers (Tutor Details)
1st
Q3a to Q3e

One more thing. We must do the differentiation first BEFORE substituting the value for x. Never the other way round, because if you substitute the value for x first, you will obtain a numeral for y, which differentiates to 0 when differentiated with respect to x.
Date Posted: 3 months ago
Kathy2
3 months ago
For part c how u get 6?
Kathy2
3 months ago
Part e how u get when y=5?
Eric Nicholas K
3 months ago
From the question
Kathy2
3 months ago
Ok. I didn’t saw it
Kathy2
3 months ago
I post qns
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##### Eric Nicholas K's answer
3654 answers (Tutor Details)
Q4 to Q6a
Date Posted: 3 months ago
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##### Eric Nicholas K's answer
3654 answers (Tutor Details)
Q6b to Q6e
Date Posted: 3 months ago
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##### Eric Nicholas K's answer
3654 answers (Tutor Details)
Q6f
Date Posted: 3 months ago
Kathy2
3 months ago
Thank you so much