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I am studying with igcse edexcel adnd i made that sequence up to test my self and i wanted to know if i needed to know if i needed to know the answer to the sequence. Thanks for your help. Basically, we know that n 2 is part of the nth term for 6, 14, 24, 36, We need to know if the nth term is just n 2 , or if we haven't finished finding parts for the nth term. To do this we compare the sequence of n 2 against 6, 14, 24, 36, Because they're not equal, we're not finished.

So, we'll look at the differences between these sequences to see what is missing from the nth term. This is the 5, 10, 15, 20, The first differences are 3, 5, 7, The second differences are 2, 2, The first differences are 6, 10, 14, The second differences are 4, 4, 4, This means whenever the second difference is 2, it involves an n 2 term; if it's 4, it includes a 2n 2 term; if it's 6, it includes a 3n 2 term, etc.

Use of this site constitutes acceptance of our User Agreement and Privacy Policy. The difference between 11 and 3 is 8. The difference between 20 and 7 is What do I do?! Are you sure that you want to delete this answer? Compare with yours 11, 20, 35, 56,and so on. Hope this is clear, and good luck! Quadratic Sequences nth term help please!? Think more generally, and establish a pattern between each case. You do not need to sum up anything. If there are n people in the room, you will shake hands with everyone but yourself in the room n And each person in the room will ALSO shake hands with 19 other people.

I was thinking about this problem, and I realized the answer is actually: All possible cominations of ABCD each represents a handshake: This makes sense because Person A shaking person B's hand is the same as person B shaking person A's hand.

We believe this is right! You don't actually need a number, you just need the equation. You can use any letter to make your point Will - N-1 isn;t the total number of handshakes. You need to do the sum first before reaching the handshakes!

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Used as a homework but could easily be used in a lesson/5(23).

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Find the nth term of the quadratic sequences. The formulae for quadratic sequences are established by taking second differences between the list of the sequence is indeed quadratic (of.

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May 20,  · How to find nth term of the sequence 6+13+24+39+.. Forums. Search Forums; Search; Log in or Sign up. Physics Forums | Science Articles, Homework Help, Discussion. Forums > Mathematics > General Math > Limited time only! Sign up for a free 30min Do you mean "nth term of the sequence" 6,13,24,39, or "nth partial sum of the series" 6. Get an answer for 'What is the nth term for the sequence 11 12 15 16 19 20 21 24 25 26 29 30 31 32, and what is the nth term formula? ' and find homework help for.

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Answer to find a formula for the nth term of the sequence 4, -9/4, 16/7, /10, 36/ Write the nth term of the following sequence in terms of the first term of the sequence. 1, 8, 15, 22, - Answered by a verified Math Tutor or Teacher.