Textbook Errors (A Level Maths)

Cambridge International AS & A Level Mathematics: Pure Mathematics 1 Coursebook, by Sue Pemberton et al., (Cambridge University Press, 2018); ISBN: 9781108407144

• Page 286, Exercise 1B, Question 11b. The answer should be 138 metres (to 3 sf).
• Page 288, End of Chapter Review Exercise 1, Question 4. The answer should be written in terms of $k$ not $x$.
• Page 304, Exercise 5F, Question 4d. Only 0.0643 and 2.36 are correct, ignore 3.21 and 5.51.

Cambridge International AS & A Level Mathematics: Mechanics Coursebook, by Jan Dangerfield at al., (Cambridge University Press, 2018); ISBN: 9781108407267

• Page 122, Exercise 5B, Question 11a. It should say, show that the tension in the string is $\frac{3\left(1+\sqrt{3}\right)}{4}N$.
• Page 222, Exercise 3C, Question 8c. The solution should be $25.5^\circ$ not $28.1^\circ$.

Cambridge International AS & A Level Mathematics: Probability & Statistics 1 Coursebook, by Dean Chalmers, (Cambridge University Press, 2018); ISBN: 9781108407304

• No errors identified to date.

Cambridge International AS & A Level Mathematics: Pure Mathematics 2 & 3 Coursebook, by Sue Pemberton et al., (Cambridge University Press, 2018); ISBN 9781108407199

• Page 276, 2^nd line it says $\sin\theta=\frac{x}{r'}$, it should say $\sin\theta=\frac{y}{r}$.
• Page 334, Exercise 7B, Question 10, the first part of the answer should be: $S_n=\frac{1}{2}\left[\frac{1}{n}-\frac{2}{n+1}+\frac{1}{n+2}\right]$