Determine Whether the Given Function Satisfies a Laplace Equation $$f ( x , y , z ) = \cos ( 6 x ) \sin ( - 5 y ) e ^ { ( \sqrt { 61 } z ) }$$

True/False

Determine whether the given function satisfies a Laplace equation.
- $$f ( x , y , z ) = \cos ( 6 x ) \sin ( - 5 y ) e ^ { ( \sqrt { 61 } z ) }$$