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Exponentials and Logarithms

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Question 21

Given that y=log⁡3xy = \log_3 xy=log3​x, find expressions in terms of y y\,y for

a.

log⁡3x3\log_3 x^3log3​x3

[2]
b.

log⁡39x\log_3 9xlog3​9x

[2]
c.

log⁡81x\log_{81} xlog81​x

[2]
Markscheme

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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