3.3 Dimension of a vector space all elements x- where 34-2x2-0 2 x1 of all elements x-x) where x' + x2+Xy-o set of all elements x=1 x) where A+å°å°1 The set of all elements x=M where x, +x2+xpl s, The set of elements x-4 for all real numbers a and b xi 6 The set of all elements x2 where +x2 + x3-0, ì-x2 + 2x3-0, 3x,-x2 + 5x3-0 In each of Problems 7-11 determine whether the given set of functions form a vector space under the usual operations of function addition and multiplication of a function by a constant. 7. The set of all polynomials of degree
