OCR C4 2012 June — Question 3

Exam BoardOCR
ModuleC4 (Core Mathematics 4)
Year2012
SessionJune
TopicGeneralised Binomial Theorem
TypeExpand and state validity
3
  1. Expand \(\frac { 1 + x ^ { 2 } } { \sqrt { 1 + 4 x } }\) in ascending powers of \(x\), up to and including the term in \(x ^ { 3 }\).
  2. State the set of values of \(x\) for which this expansion is valid.
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