| Exam Board | AQA |
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| Module | Paper 1 (Paper 1) |
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| Year | 2019 |
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| Session | June |
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| Marks | 1 |
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| Topic | Laws of Logarithms |
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1 Given that \(a > 0\), determine which of these expressions is not equivalent to the others.
Circle your answer.
[0pt]
[1 mark]
$$- 2 \log _ { 10 } \left( \frac { 1 } { a } \right) \quad 2 \log _ { 10 } ( a ) \quad \log _ { 10 } \left( a ^ { 2 } \right) \quad - 4 \log _ { 10 } ( \sqrt { a } )$$