(10 points) Write the following expressions using summation notation. (For example, consider 931 + 32:2. The goal is to write 1:1 + 32:2 2 L1 am. That is, determine the vector 0 and integer 71; here, 0 = [1 3]T and n = 2.) (a) $1 + $2 + :53 (b) 531 + 3x2 2933 + 10334 (c) 531 +$2+$3+$4+'+$1000 (d) 331 +2x2+3x3 +4x4+-~+nxn (e)331$2+333-$4+'\"+1'2n1$2n