WURTH 100 POINTS es POINTS PER QUESTION Directions Answer al

WURTH 100 POINTS, es POINTS PER QUESTION) Directions: Answer all 20 Multiple-Choice Questions on a Scantron. Disclaimer These HOMEWORK :3 QUESTIONS may also be used sample review questions for TEST a3. Howeve, its contents may not necessarily his/her studies from the textbook, student solution manual, MyMathLab and visiting Academic Support Lab) for better performance. Ne written or oral escuses will be assepted for this Strictly and Positively Due on TEST &3 DATE. Late Submission will Not be Accepted or Graded. Attach Your SOLUTION WORK-SHEETS to Substantiate Your Answers. Please note that there will not be any partial credit for multiple-choice questions. Cooperative Learning and Peer Tutoring are allowed for homework Note: This will be counted towards your total final grading points as explained in the syllabus and in the class. comespond to the actual test qeestions. It is the student\'s responsibility to supplement MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question. Write out the first five terms of the sequence. 2n -1 1) The given pattern continues. Write down the nth term of the sequence lan) suggested by the pattern. 2) 4, -8, 12, -16,. 2) B) an-(-1)n+1.4n D) an-(-1h+1-4 A) an-(-1)n4 The sequence is defined recursively. Write the first four terms. an 1 3) a1-5, an n+1 A)1,2 5,4345 Find the sum of the sequence. 4) 4) (-1)k.8k B) 80 C) 4096 D) 16 A) -80

Solution

1) sn = {(-1)^n-1(n+1)/(2n-1) }

n=1 ; s1 = { (-1)^0(1+1)/(2 -1) } = 2

n =2 ; s2 = { (-1)^1(2+1)/(4-1) } = -1

n = 3 ; s3 = { (-1)^2(4/5) } = 4/5

Option C

2) 4 , -8 , 12, -16

common difference , d = -2

a2 = 4*2(-1)^(1+2) = -8

a3 = 4*3(-1)^(1+3) = 12

So, an = (-1)^(n+1)4n

Option B