## Summary/Background

In fact, use of logarithms is not necessary to solve the above equations. Can you see why?

## Software/Applets used on this page

## Glossary

### solve

To find the answer or solution to a problem.

### union

The union of two sets A and B is the set containing all the elements of A and B.

## This question appears in the following syllabi:

Syllabus | Module | Section | Topic | Exam Year |
---|---|---|---|---|

AP Calculus AB (USA) | 1 | Exponentials and logs | Logarithms & exponentials | - |

AP Calculus BC (USA) | 1 | Exponentials and logs | Logarithms & exponentials | - |

AQA A-Level (UK - Pre-2017) | C2 | Exponentials and logs | Logarithms & exponentials | - |

AQA AS Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

AQA AS/A2 Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

CBSE X (India) | Algebra | Simultaneous equations | Algebraic solutions | - |

CCEA A-Level (NI) | C2 | Exponentials and logs | Logarithms & exponentials | - |

CIE A-Level (UK) | P2 | Exponentials and logs | Logarithms & exponentials | - |

Edexcel A-Level (UK - Pre-2017) | C2 | Exponentials and logs | Logarithms & exponentials | - |

Edexcel AS Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

Edexcel AS/A2 Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

I.B. Higher Level | 1 | Exponentials and logs | Logarithms & exponentials | - |

I.B. Standard Level | 1 | Exponentials and logs | Logarithms & exponentials | - |

Methods (UK) | M2 | Exponentials and logs | Logarithms & exponentials | - |

OCR A-Level (UK - Pre-2017) | C2 | Exponentials and logs | Logarithms & exponentials | - |

OCR AS Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

OCR MEI AS Maths 2017 | Pure Maths | Exponentials and Logarithms | Further Log Equation Solving | - |

OCR-MEI A-Level (UK - Pre-2017) | C2 | Exponentials and logs | Logarithms & exponentials | - |

Pre-Calculus (US) | C5 | Exponentials and logs | Logarithms & exponentials | - |

Pre-U A-Level (UK) | 1 | Exponentials and logs | Logarithms & exponentials | - |

Scottish (Highers + Advanced) | HM3 | Exponentials and logs | Logarithms & exponentials | - |

Scottish Highers | M3 | Exponentials and logs | Logarithms & exponentials | - |

Universal (all site questions) | E | Exponentials and logs | Logarithms & exponentials | - |

WJEC A-Level (Wales) | C2 | Exponentials and logs | Logarithms & exponentials | - |