Further Mathematics CIE A Level (2011-2013) Differential Equations S11(11) S11(13) S12(11) S12(13) Question 11 Further Mathematics S13(11) S13(13) W11(11) Question 11 W11(13) CIE A Level (2011-2013) Further Mathematics W12(11) W12(13) Question 11 W13(11) W13(13) CIE A Level (2011-2013)