b) Describe an efficient algorithm to multiply two sparse matrices. c) Simulate your algorithm of part b to add the sparse matrices A and B A 0 2 B00 3 0 2 4 1 1-8 2 1 -1 4) A tridiagonal matrix is a special kind of sparse matrix each of whose non zero elements has the property that the difference of the row index and the column index is either one, zero or minus one. a) Design an efficient algorithm to multiply two tridiagonal matrices. You can not use the multiply algorithm of lecture. Use a paragraph format. b) Write pseudo code for your algorithm of part a