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Date May 2017 Marks available 4 Reference code 17M.1.AHL.TZ1.H_1
Level Additional Higher Level Paper Paper 1 (without calculator) Time zone Time zone 1
Command term Find Question number H_1 Adapted from N/A

Question

Find the solution of log 2 x log 2 5 = 2 + log 2 3 .

Markscheme

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

log 2 x log 2 5 = 2 + log 2 3

collecting at least two log terms     (M1)

eg log 2 x 5 = 2 + log 2 3  or  log 2 x 15 = 2

obtaining a correct equation without logs     (M1)

eg x 5 = 12 OR x 15 = 2 2      (A1)

x = 60      A1

[4 marks]

Examiners report

[N/A]

Syllabus sections

Topic 1—Number and algebra » SL 1.5—Intro to logs
Topic 1—Number and algebra » SL 1.7—Laws of exponents and logs
Topic 1—Number and algebra

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