Some taboo math questions whose answers have yet to be officially confirmed are:
a) There is an inverse relationship between regulated prostitution in Singapore and the demand for mistresses (or "second wives").
b) The number of Muslim Singaporeans converting to Christianity has been on the rise in the last decade.
c) The rate of extramarital affairs among the different races in Singapore is highest among the Malays or Muslims.

Mr. Ian titles his taboo math topic on Curve Sketching, “The Seduction of Curves,” and parrots things like “Your tan line is showing!” “Asymptotes who can get closer and closer but will never be together,” and “Tangent lines who met once and then parted forever.”