Nonlinear Sequences (With Examples)

In this video I discuss how to calculate the n'th term of nonlinear sequences, by introducing the idea of first and second differences. This video corresponds with Chapter 2.6 in the Edexcel GCSE Mathematics textbook.

[zhongwenbuxiban]

oh my gosh ur so smart, thank you for teaching me how to do linear and non-linear sequence, I was so confused about it

[cinnamongrader]

Thank you so much! I can’t believe you have so few subscribers! You made this so much easier, before i did not have a clue! I have exams soon so I’m working on doing it as well as I can. You are wonderful!

[maerufali]

thank you so much you helped me pass my gcse

[nguyenmanhja]

hi i have a math problem i use your method but it not correct. My sequence are 20, 18, 15, 11, 6 i use your method make a position to term rules -0.5n^2 - n +21.5 and it not correct pls help me out and show me how it can be done

[KodeArtss]

What to do when the second difference isnt equal like 2, 5, 11, 23 have a difference of 3, 6, 12 and the second different is 3, 6

[qayiya]

How did you find (a ) on the second difference

[goku-sangreen]

"the 2nd difference equals to 2a" divide the second difference by 2 basically

[hanajabar]

How do you know its a quadratic sequence?