Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    1
    ReputationRep:
    Hi all, I ran into this issue that I barely know how to solve it. Would be great to retrieve help with others. Apology the image below is small.

    Simplify the following expressions:

    Name:  Untitled.png
Views: 50
Size:  2.9 KB

    I'm not sure where to begin, if someone can guide me here that would really help me lots. Thank you!
    Offline

    15
    ReputationRep:
    (Original post by Mr_Maths_Student)
    Hi all, I ran into this issue that I barely know how to solve it. Would be great to retrieve help with others. Apology the image below is small.

    Simplify the following expressions:

    Name:  Untitled.png
Views: 50
Size:  2.9 KB

    I'm not sure where to begin, if someone can guide me here that would really help me lots. Thank you!
    You should be familiar with the formula for the sum of the first N natural number. Sn= (n/2)(n+1)
    You should also know that when you have Σ(2j) it is the same as 2Σj
    So the expression reads what is the sum from i=1 to 2n of i - 2(sum from j=1 to n of j)
    So just write out the expressions and get rid of the signs notation and then simplify the answer.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 28, 2015
Poll
Do you like carrot cake?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.