| Exam Board | Edexcel |
| Module | C3 (Core Mathematics 3) |
| Year | 2011 |
| Session | January |
| Topic | Polynomial Division & Manipulation |
2. (a) Express
$$\frac { 4 x - 1 } { 2 ( x - 1 ) } - \frac { 3 } { 2 ( x - 1 ) ( 2 x - 1 ) }$$
as a single fraction in its simplest form.
Given that
$$f ( x ) = \frac { 4 x - 1 } { 2 ( x - 1 ) } - \frac { 3 } { 2 ( x - 1 ) ( 2 x - 1 ) } - 2 , \quad x > 1$$
(b) show that
$$f ( x ) = \frac { 3 } { 2 x - 1 }$$
(c) Hence differentiate \(\mathrm { f } ( x )\) and find \(\mathrm { f } ^ { \prime } ( 2 )\).