2010 SQA Higher Maths: paper 2 no.5: Optimisation

This is a replacement video for an older one in which the video and audio quality were very much poorer, as well as being probably less comprehensive. Here other acceptable options for obtaining the required results are given where appropriate. Obtaining an expression for a constrained area. Finding the maximum value of the area. Instructional exercise consisting of question 5 from paper 2 of the 2010 SQA Higher Mathematics exam. Set out in stages of 'try then check' the worked solution to each part of the question.