# Lagrangian form of acceleration

Reading the Wikipedia article on Lagrangian mechanics I have problems to understand one basic proposition in the motivation of Euler-Lagrange equation. The article says:

For me is unclear how the acceleration term is expressed with the Christoffel symbols.

Lagrange mechanics has the same form no matter what coordinates you use to describe your system. It uses so called "generalized" coordinate $$q_i$$ and their first derivatives. On the other hand, Newtonian mechanics deals mostly with vectors in 3D space and those are highly dependent on coordinates you choose to describe them.