| Exam Board | OCR |
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| Module | C4 (Core Mathematics 4) |
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| Year | 2007 |
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| Session | January |
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| Topic | Differential equations |
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9
- Find the general solution of the differential equation
$$\frac { \sec ^ { 2 } y } { \cos ^ { 2 } ( 2 x ) } \frac { d y } { d x } = 2$$
- For the particular solution in which \(y = \frac { 1 } { 4 } \pi\) when \(x = 0\), find the value of \(y\) when \(x = \frac { 1 } { 6 } \pi\).