The following question is similar to June **2008 GCE O Level A-Math Paper question** which is testing on the following concepts

**Differentiation involving exponential** (I have written a post on Differentiation of e; post on Basic Differentiation Techniques are available here too )

Finding **coordinates and nature of stationary point** (Application of Differentiation)

Watch the video for a few more **important tips** on handling this sort of question.