Use the identity cosh x y cosh x cosh y sinh x sinh y to

Last updated: 2/8/2024

Use the identity cosh x y cosh x cosh y sinh x sinh y to verify the identity cosh 2x cosh x sinh x Let x y Substitute x for y in the equation cosh x y cosh x cosh y sinh x sinh y cosh x y cosh x cosh y sinh x sinh y cosh x cosh x cosh sinh x sinh