2. Let I . ^ - ` be given by* 1 2 1 ( 1 1 , 12, 13 ) ) = ( 371 - 6x2 + 58;, 271 - 4x2 + 1x3 - 5x1 + 10^2 + 3.83, - 1 1 + 2x2 + 8x's ). a . Find [ IT ] ]. b . Find the ref Ry of [ ] ] ] C . Use R , to find a basis for the kernel of !' ] . 4 . Find the nullity of I z. E . Is I ; one - to - one