Expand 1+2x3\sqrt[3]{1 + 2x}31+2x in ascending powers of x x\,x up to and including the term in x3x^3x3, and state, using set notation, the values of x x\,x for which the expansion is valid.
Use your expansion to find an approximation for 1.13\sqrt[3]{1.1}31.1 to five decimal places.
67 exam-style questions on WJEC A Level Maths 3.4.1 Sequences and Series (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.