Edexcel C1 2011 January — Question 10

Exam BoardEdexcel
ModuleC1 (Core Mathematics 1)
Year2011
SessionJanuary
TopicCurve Sketching
TypeRational curve intersections

10. (a) On the axes below, sketch the graphs of
  1. \(y = x ( x + 2 ) ( 3 - x )\)
  2. \(y = - \frac { 2 } { x }\)
    showing clearly the coordinates of all the points where the curves cross the coordinate axes.
    (b) Using your sketch state, giving a reason, the number of real solutions to the equation $$x ( x + 2 ) ( 3 - x ) + \frac { 2 } { x } = 0$$ \includegraphics[max width=\textwidth, alt={}, center]{95e11fd7-765c-477d-800b-7574bc1af81f-13_994_997_1270_479}