| Exam Board | OCR MEI |
|---|---|
| Module | C4 (Core Mathematics 4) |
| Paper | Download PDF ↗ |
| Topic | Completing the square and sketching |
| Type | Solve rational equation leading to quadratic |
| Difficulty | Moderate -0.5 This is a straightforward algebraic manipulation question requiring cross-multiplication to form a quadratic, then applying the quadratic formula. While it involves the golden ratio context, the mathematical steps are routine for C4 level with no conceptual difficulty or problem-solving insight required. |
| Spec | 1.02f Solve quadratic equations: including in a function of unknown |
4 Justify the statement that the equation in line 83,
$$\frac { \phi } { 1 } = \frac { 1 } { \phi - 1 }$$
has the solution $\phi = \frac { 1 \pm \sqrt { 5 } } { 2 }$.\\
\hfill \mbox{\textit{OCR MEI C4 Q4}}