For two vectors $\vec { a } = ( 3 , - 1 ) , \vec { b } = ( 1,2 )$, what is the sum of all components of vector $\vec { a } + \vec { b }$? [2 points] (1) 1 (2) 2 (3) 3 (4) 4 (5) 5
For two vectors $\vec { a } = ( 3 , - 1 ) , \vec { b } = ( 1,2 )$, what is the sum of all components of vector $\vec { a } + \vec { b }$? [2 points]\\
(1) 1\\
(2) 2\\
(3) 3\\
(4) 4\\
(5) 5