A function ( f ) is even if ( f(-x) = f(x) ) for all ( x ) in the domain.
A function ( f ) is odd if ( f(-x) = -f(x) ) for all ( x ) in the domain.
Otherwise it is neither.
Accedmychevron_right11thchevron_rightmathchevron_rightTrigonometric Functions And Their Graphschevron_rightExercise 11.1