575 Answers Chapter 4

Selected answers are given here. For a full set of worked solutions, see Specialist Maths Dimensions Units 3 & 4 Solutions and Study Guide.cylocal maximumcylocal maximum2x12−335xdynon-stationary point of inflectionlocal maximum5dlocal minimumy3local maximumnon-stationary pointof inflectione−22 xynon-stationary point of inflectionlocal maximum3e−2local maximumynon-stationary point of inflection23x02 4 xlocal minimumfynon-stationary point of inflectionlocal maximum–40 2 4 xf−1 3 5xlocal minimumlocal maximumnon-stationary point of inflectiony−3−12 x2 alocal minimumylocal maximum1g−5local minimumynon-stationary point of inflection– 3 0 1 2 3xlocal minimum−2 0.5xby1local maximahlocal minimumynon-stationary point of inflection−21xlocal minimumlocal maximum−3 0.5xExercise 4F1 a 3y′ b 4yy′c 12y 2 y′ + 5 d y + xy′e 2xy 2 + 2x 2 yy′ f 1 – y′Answers585