$x \arccos(x)+x/2=\cos(2x)$
I dont know how to solve this one. It looks relatively easy but it is not, not for me at least.
Anybody to help?
$x \arccos(x)+x/2=\cos(2x)$
I dont know how to solve this one. It looks relatively easy but it is not, not for me at least.
Anybody to help?