
Concept explainers
To calculate:
The five terms and limit of the sequence, if limit does not exist then give reason.

Answer to Problem 51E
First five terms are 1,−14,19,−116,125 and limit of the sequence is 0 .
Explanation of Solution
Given information:
an=(−1)n+1n2
Calculation:
For completing the table of the sequence,
Consider the given functions,
an=(−1)n+1n2
First five terms are : a1,a2,a3,a4,a5
For n=1 :
an=(−1)1+112 =1
For n=2 :
an=(−1)2+122 =−14
For n=3 :
an=(−1)3+132 =19
For n=4 :
an=(−1)4+142 =−116
For n=5 :
an=(−1)5+152 =125
Now for finding out the limit of the sequence in case it exists:
limn→∞an=limn→∞(−1)n+1n2
Use the property of limit,
limn→∞f(x).g(x)=limn→∞f(x).limn→∞g(x)
Thus,
limn→∞(−1)n+1n2=limn→∞(−1)n+1.limn→∞1n2
The limit limn→∞1n2 is 0 as the degree of the numerator is less than the degree of the denominator.
Thus, the limit of the sequence is,
limn→∞an=limn→∞(−1)n+1.limn→∞1n2=limn→∞(−1)n+1.0=0
Chapter 11 Solutions
Precalculus with Limits: A Graphing Approach
- For the system consisting of the lines: and 71 = (-8,5,6) + t(4, −5,3) 72 = (0, −24,9) + u(−1, 6, −3) a) State whether the two lines are parallel or not and justify your answer. b) Find the point of intersection, if possible, and classify the system based on the number of points of intersection and how the lines are related. Show a complete solution process.arrow_forward3. [-/2 Points] DETAILS MY NOTES SESSCALCET2 7.4.013. Find the exact length of the curve. y = In(sec x), 0 ≤ x ≤ π/4arrow_forwardH.w WI M Wz A Sindax Sind dy max Утах at 0.75m from A w=6KN/M L=2 W2=9 KN/m P= 10 KN B Make the solution handwritten and not artificial intelligence because I will give a bad rating if you solve it with artificial intelligencearrow_forward
- Solve by DrWz WI P L B dy Sind Ⓡ de max ⑦Ymax dx Solve by Dr ③Yat 0.75m from A w=6KN/M L=2 W2=9 kN/m P= 10 KN Solve By Drarrow_forwardHow to find the radius of convergence for the series in the image below? I'm stuck on how to isolate the x in the interval of convergence.arrow_forwardDetermine the exact signed area between the curve g(x): x-axis on the interval [0,1]. = tan2/5 secx dx andarrow_forward
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning





