| Exam Board | OCR |
|---|
| Module | Further Pure Core 2 (Further Pure Core 2) |
|---|
| Year | 2019 |
|---|
| Session | June |
|---|
| Topic | First order differential equations (integrating factor) |
|---|
5
2
4
\end{array} \right) + \mu \left( \begin{array} { r }
1
- 2
1
\end{array} \right)
\end{aligned}$$
Find, in exact form, the distance between \(l _ { 1 }\) and \(l _ { 2 }\).