Update 12.temporary_ins/41.classical-analytical-mechanics/20.classical-lagrangian-mechanics/20.lagrangian-mechanics-application/05.lagrangian-mechanics-method/10.main/textbook.fr.md

Update 12.temporary_ins/41.classical-analytical-mechanics/20.classical-lagrangian-mechanics/20.lagrangian-mechanics-application/05.lagrangian-mechanics-method/10.main/textbook.fr.md

Update 12.temporary_ins/41.classical-analytical-mechanics/40.classical-hamiltonian-mechanics/20.hamiltonian-mechanics-application/05.hamiltonian-mechanics-method/20.overview/cheatsheet.fr.md

Update 12.temporary_ins/41.classical-analytical-mechanics/20.classical-lagrangian-mechanics/20.lagrangian-mechanics-application/05.lagrangian-mechanics-method/20.overview/cheatsheet.fr.md

Update 12.temporary_ins/41.classical-analytical-mechanics/40.classical-hamiltonian-mechanics/20.hamiltonian-mechanics-application/05.hamiltonian-mechanics-method/10.main/textbook.fr.md