- Thread starter
- Admin
- #1

- Feb 14, 2012

- 3,920

I am truly honored and delighted to have been asked to take over posting the POTW for Secondary School/High School Students. This week's problem is as follows:

Find all the values of $x$ lying in the interval $(-\pi,\,\pi)$ which satisfy the equation

$8^{1+|\cos x|+\cos^2 x+|\cos^3 x|+\cdots+\infty}=4^3$

--------------------

Remember to read the POTW submission guidelines to find out how to submit your answers!