Reed Ellis
01/19/2024 · Senior High School

Soit \( \left(w_{n}\right) \) la suite définie pour tout \( n \in \mathbb{N} \) par \[ w_{n}=n^{2}+2 n+(-1)^{n} n \] 1. Justifier que \( w_{n} \geqslant n^{2} \), pour tout \( n \in \mathbb{N} \). 2. En déduire la limite de la suite \( \left(w_{n}\right) \)

UpStudy ThothAI Solution

Tutor-Verified Answer

Quick Answer

1. Pour justifier que \( w_{n} \geqslant n^{2} \) pour tout \( n \in \mathbb{N} \), on factorise \( w_{n} \) et considère les cas de \( n \) pair et impair. Dans les deux cas, \( w_{n} \) est supérieur ou égal à \( n^{2} \). 2. La limite de la suite \( (w_{n}) \) est \( \infty \) car \( w_{n} \) tend vers l'infini lorsque \( n \) tend vers l'infini.

Step-by-step Solution

Elevate Your Learning
Unlock full answers and more with UpStudy Premium
Get AI Assistant
Answered by UpStudy AI and reviewed by a Professional Tutor
UpStudy ThothAI
Self-Developed and Ever-Improving
Thoth AI product is constantly being upgraded and optimized.
Covers All Major Subjects
Capable of handling homework in math, chemistry, biology, physics, and more.
Instant and Accurate
Provides immediate and precise solutions and guidance.
Try Now
Ask Tutors
Ask AI
10x
Fastest way to Get Answers & Solutions
By text

Enter your question here…

By image
Re-Upload
Uploaded Files
xxxx.png0%
Submit
📸 STUDY CAN BE A REAL STRUGGLE
Why Not UpStudy It?
Select your plan below
Premium

You can enjoy

  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to answer and
    solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic
  • Limited Solutions