CSEC Mathematics · January 2009 · Paper 2 · Question 9(b)(ii)
Hence, or otherwise, determine the values of x at which the graph cuts the x-axis.
The mark scheme is shown once you've answered.
Practise this questionOther parts of this question
- 9(a)Make t the subject of the formula P/2 = sqrt((t+r)/g).[3 marks]
- 9(b)(i)Express the function f(x) = 2x² - 4x - 13 in the form f(x) = a(x + h)² + k.[3 marks]
- 9(b)(iii)Hence, or otherwise, determine the interval for which f(x) ≤ 0.[2 marks]
- 9(b)(iv)Hence, or otherwise, determine the minimum value of f(x).[1 mark]
- 9(b)(v)Hence, or otherwise, determine the value of x at which f(x) is a minimum.[2 marks]
More practice: the rest of this paper · more Solving Quadratic Equations Algebraically questions · all CSEC Mathematics past papers