#Happy anniversary for Department of Mathematics Universitas Andalas (5 March)
#Happy International Day of Mathematics (14 March)

Can you calculate the limit x to 0 of (tanx-x)/x^3 without using L'Hopital's rule or Taylor expansion? Find the answer in this video https://www.youtube.com/watch?v=xIOBvGzh4JY and the next one (see the description box). For those who can rewrite the answer completely and accurately, please email it to This email address is being protected from spambots. You need JavaScript enabled to view it. by including the name and origin of the institution/school/univ. The best answer will receive an attractive gift. The answers are accepted until March 14, 2022.

This quiz encourages everyone, especially students, to get involved in solving a simple math problem that appears in a film series. This quiz aims to stimulate the public in giving an appreciation to mathematics in a relaxed and entertaining way.

This quiz has also been published in https://www.idm314.org/ as one of the events around the world to celebrate the International Day of Mathematics. See https://www.idm314.org/#event-details/2022/1133