please help with this 3 qns

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secondary 4 | A Maths
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secondary 4 A Maths Singapore

please help with this 3 qns

Date Posted: 1 year ago

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First question

Date Posted: 1 year ago

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Second qn

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3rd qn

Date Posted: 1 year ago

Alice

1 year ago

2nd order derivative ans shld be 4 though

Eng Jun Jie

1 year ago

Yeah, I go a careless mistake at the second last line