#ATTENDANCE QUIZ FOR LECTURE 9 of Dr. Z.'s Math454(02) Rutgers University # Please Edit this .txt page with Answers #Email ShaloshBEkhad@gmail.com #Subject: p9 #with an attachment called #p9FirstLast.txt #(e.g. p9DoronZeilberger.txt) #Right after finishing watching the lecture but no later than Oct. 6, 2020, 8:00pm THE NUMBER OF ATTENDANCE QUESTIONS WERE: PLEASE LIST ALL THE QUESTIONS FOLLOWED, AFTER EACH BY THE ANSWER #Attendance question 1 #let a[i] be the i-th digit of your ruid (if it is zero make it 1) #in how many ways can you walk from 0 to 131 using as fundamental #the set {a[3],a[5],a[9]} #Answer 1 #819 #Attendance question 2 #is this sequence in the oeis # 1,1,1,1,2,3,5,7,10,15,23,35,52,77,115,173,260 #Answer 2 #the sequence is not in oeis #Attendance question 3 #Let f(x)=1/(1-4x-x^6) #(i) Find the coefficient of x^100 in the taylor expansion of f(x) #(ii)Find the coefficient of x^101 in the taylor expansion of f(x) #How far is a(100)/a(100) from the real root of 1-4*x-x^6 #Attendance Answer 3 #411048332990455915104492378532366163275381170780171837436480 #1644594257296515568488059327938971072084521685469936722570496 #a(100) is pretty close to the real root #Attendance Question 4 #In how many ways can chess king walk from one corner of the chess board to the opposite corner? #Attendance Answer 4 #470010