Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2016 | June | Q#6
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Question
A sequence is defined by
,
Where is a constant.
a) Write down expressions for and
in terms of k.
Find,
b) in terms of k, giving your answer in its simplest form.
c) .
Solution
a)
We are given that sequence is defined by
We are required to find and
.
We can utilize the given expression for general terms beyond first term as;
Similarly;
b)
We are required to find;
We can substitute given and found
from (a);
c)
We are required to find;
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