Exam-Style Questions on Differentiation Quadratics
Problems on Differentiation Quadratics adapted from questions set in previous Mathematics exams.
Let \(f(x)=jx^3+jx^2+kx+m\) where \(j, k\) and \(m\) are constants.
(a) Find \(f'(x)\)
(b) If \(f'(x)\ge 0\), show that \(j^2\le 3jk\).
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The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards.
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