| Exam Board | OCR MEI |
|---|---|
| Module | C2 (Core Mathematics 2) |
| Year | 2012 |
| Session | January |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Exponential Equations & Modelling |
| Type | Simple exponential equation solving |
| Difficulty | Easy -1.2 This is a straightforward single-step exponential equation requiring only isolation of the exponential term, taking logarithms of both sides, and applying log laws. It's a routine textbook exercise with no problem-solving element—purely mechanical application of a standard technique taught early in C2. |
| Spec | 1.06g Equations with exponentials: solve a^x = b |
Use logarithms to solve the equation $235 \times 5^x = 987$, giving your answer correct to 3 decimal places. [3]6 Use logarithms to solve the equation $235 \times 5 ^ { x } = 987$, giving your answer correct to 3 decimal places.
\hfill \mbox{\textit{OCR MEI C2 2012 Q6 [3]}}