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)
Q10

Expressions in the form ln (linear/linear) such as this question will never have a stationary point.

Remember that denominators cannot equal zero.

I use this light blue pen now, tell me if you cannot see the writing clearly. Red pen is for explanation.