This document last updated 12 May 2012.
I'll list corrections to the main pdf documents here and incorporate them into the main pdf documents from time to time.
2002 II 1 while true, my answer isn't helpful: the equation seems to describe points on a curve in 3D space, but it's not obvious how to express the curve simply. I tried assuming (without loss of generality) that the vector a is along the x-axis and the vector c is in the xy-plane. One can then solve for the vector r=(x,y,z) in terms of lambda. But it still isn't obvious what the curve is.
2002 II 7 (a) should be y = A(exp(-2x) - (2/3)exp(-3x)) + exp(-3x) + x - 5/6
2002 II 9 (ii) should be 1 + 2x + 2x^2
2003 I 4 in the first part the second term should be -(2/3)x^3, not x^3, and (ii) should be ln(ln(x)) + c
2005 I 9 (b) should be y=e^(-x)[1/alpha + c(x^(-alpha))] and y=e^(-x)[ln(x) + c] when alpha is zero
2008 II 19 (b) They've confusingly used Sigma(x) to mean a function of x and not a sum, and Sigma0 is just some constant...: f(x) = Acos(kx) + Bsin(kx) where A, B are constants; V(x,y) = -(pi)(Sigma0)cos(x)exp(-|y|)
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