IGCSE
EDEXCEL
Further Mathematics
9 Marks
QP-FurtherPureMath-201601-P2 · Question 8
Question (excerpt):
16 8 The nth term of an arithmetic series is tn where tn = 2n – 3 The sum of the first n terms of the series is Sn (a) Show that Sn = n(n – 2) (4) (b) Find the value of n such that 5tn+2 = 3Sn–3 (5) .…
16 8 The nth term of an arithmetic series is tn where tn = 2n – 3 The sum of the first n terms of the series is Sn (a) Show that Sn = n(n – 2) (4) (b) Find the value of n such that 5tn+2 = 3Sn–3 (5) .…
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