Q114 · Practice questionTechnology-freeSimple familiar4 marks
QUESTION 114 (4 marks)
Analyse the turning points of : find their coordinates and state the nature of each turning point.
WORKED SOLUTION
4 marksPractice marking scheme
ANSWER
Local minima at and ; local maximum at .
Worked solution
gives . Also . This is positive at and negative at .
Finds all three stationary -values.
Determines the corresponding -values.
Correctly classifies .
Correctly classifies .
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