Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | May-Jun | (P1-9709/01) | Q#4
i. Find the first three terms in the expansion of in ascending powers of .
ii. Find the value of for which there no term in in the expansion of
Expression for the Binomial expansion of is:
First rewrite the given expression in standard form.
In the given case:
To find the value of in the expansion of
First we know from (i) that
Since there is no term with :