Find, giving your answer to 3 significant figures where appropriate, the value of x x\,x for which
3x=53^x = 53x=5 ,
log2(2x+1)−log2x=2\log_2 (2x + 1) - \log_2 x = 2log2(2x+1)−log2x=2 .
Practise Edexcel A Level Old Maths Logs with exam-style questions for A Level Old Maths. 16 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.