Sequences Notes Answers Pure Math 10 Form

Instructions and help about Sequences Notes answers Pure Math 10

in this video we're going to focus mostly on arithmetic sequences now to understand what an arithmetic sequence is it's helpful to distinguish it from a geometric sequence so here's an example of an arithmetic sequence the numbers 3 7 11 15 19 23 and 27 represents an arithmetic sequence this would be a geometric sequence 3 6 12 24 48 96 192. do you see the difference between these two sequences and do you see any patterns within them in the arithmetic sequence on the left notice that we have a common difference this is the first term this is the second term this is the third fourth and fifth term to go from the first term to the second term we need to add four to go from the second to the third term we need to add four and that is known as the common difference in a geometric sequence you don't have a common difference rather you have something that is called the common ratio to go from the first term to the second term you need to multiply by two to go from the second term to the thir