Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Kathy, you must be able to absorb the key ideas in this question, that is,

1. What happens at stationary points? What happens to the gradient?

2. How do we test for the nature of the stationary points? Is it a maximum, a minimum or something else?

3. What does the information tell me about the equations to write?