We started the lesson by reviewing the idea of stationary points and the first derivative test (draw table). We then encountered a problem with a point of inflexion and we discussed the topic of point of inflexion.
We then discussed higher derivatives and the second derivative test for nature of stationary points. As we were trying out the problems, we had a quick recap on derivatives of a reciprocal function.
Lastly, we discussed the idea behind an increasing and decreasing function.
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