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• The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Advice • Read each question carefully before you start to answer it. • Try to answer every question. • Check your answers if you have time at the end. Candidates may use any calculator allowed by the regulations of the
Maths Genie is a free GCSE and A Level revision site. It has past papers, mark schemes and model answers to GCSE and A Level exam questions.
Maths revision video and notes on the topic of logarithms.
Question 1 Simplify each of the following logarithmic expressions, giving the final answer as a single logarithm. a) log 7 log 22 2+ b) log 20 log 42 2− c) 3log 2 log 85 5+ d) 2log 8 5log 26 6− e) log 8 log 5 log 0.510 10 10+ − log 142, log 52, log 645, log 26, log 8010
Solomon Press C2 EXPONENTIALS AND LOGARITHMS Answers - Worksheet A 1 a log10 1000 = 3 b log3 81 = 4 c log2 256 = 8 d log7 1 = 0 e log3 1 27 = −3 f log32 1 2 = 1 5 − g log19 19 = 1 h log36 216 = 3 2 2 4a 53 = 125 b 2 = 16 c 105 = 100 000 d 230 = 1 e −9 = 3 12 f 10−2 = 0.01 g 23 = 1 8 h 61 = 6 3 a = log7 7 2 7b = log 4 4 3 3c = log 2 2 d = log3 3 = 2 = 3 = 7 = 3 4e = log5 5 f = log8 8 1 ...
Logarithms - Past Edexcel Exam Questions. 1. (Question 7 - C2 May 2018) (i) Find the value of y for which. 1:01y 1 = 500: Give your answer to 2 decimal places. (ii) Given that. 2 log 4(3x + 5) = log 4(3x 3 + 8) + 1; x > 5. (a) show that. 9x2 + 18x. 7 = 0: (b) Hence solve the equation.
Mixed exam-style questions on exponentials and logarithms - Answers. Cheat sheets, worksheets, questions by topic and model solutions for Edexcel Maths AS and A-level Exponentials and Logarithms.
