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Exponentials and Logarithms

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Question 76

Given that x=254x = \dfrac{25}{4}x=425​ is a solution of the equation

log⁡a(x)+log⁡a(4)=2 \log_a(x) + \log_a(4) = 2 loga​(x)+loga​(4)=2

find the value of aaa.

[4]
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Exponentials and Logarithms Questions

  1. A Level
  2. /Maths
  3. /Exponentials and Logarithms

277 exam-style questions on Edexcel A Level Maths Exponentials and Logarithms, covering 14.1 Exponential Functions, 14.2 y = e^x, 14.3 Exponential Modelling, 14.4 Logarithms, 14.5 Laws of Logarithms, 14.6 Solving Equations using Logarithms, 14.7 Working with Natural Logarithms, and 14.8 Logarithms and Non-Linear Data. Each one has a worked solution and a mark scheme showing where the marks go.

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