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secondary 4 | A Maths
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claire chen
Claire Chen

secondary 4 chevron_right A Maths


Date Posted: 2 years ago
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Guan Ri Oh
Guan Ri Oh's answer
118 answers (Tutor Details)
To prove if a stationary point is maximum or minimum, you have to find the 2nd order derivative (d^2L/dx^2).

Another of looking at it is that L represents distance and there has to be a minimum distance rather than a maximum distance. Not ideal for a proof but this intuition can guide you to the correct answer.