Question 5 If a recurrence relation S() has the characteristic equation Correct x' - 6x +9 = (x - 3) then which one of the following is the Mark 1.00 out of correct form of the general solution of S(k)? 1.00 Select one : O a. 03* + 63* O b. a(-6)* + 69* O c.(a + bk) (-3)* O d. a3* =. (a + bk)3* Your answer is correct The correct answer is: (a + bk)3* Question 6 Express the following sum using sigma notation : Correct 2 + 6+ 12 + 20 + 30 Mark 1.00 out of 1.00 Select one : D ERI ( 1 2 + k ) v O CEA (2 * - k) O d. EA-O( k2 + k) O =.CA (2* + k) The correct answer is: _(k2 + k)