CAIE P3 2015 November — Question 2

Exam BoardCAIE
ModuleP3 (Pure Mathematics 3)
Year2015
SessionNovember
TopicGeneralised Binomial Theorem
TypeForm (1+bx)^n expansion

2 Given that \(\sqrt [ 3 ] { } ( 1 + 9 x ) \approx 1 + 3 x + a x ^ { 2 } + b x ^ { 3 }\) for small values of \(x\), find the values of the coefficients \(a\) and \(b\).