Let f (+) be a function ( scalar) write f (+) as a vector function v (f ) . Of( x)= cosx at z= 10 (( ) = (0, 1, 10) 2 f(the at z=- 1 3 f( x ) = 10 x - 1 at z=0 Parametrizationing arclength t S( + ) = Sir' cull du a 4 ) r (t ) = (t +2 ) 2