This morning in maths we learnt about nth terms and sequences for example 7,13,19,25,31,... the rule is 1+6n. This was a harder one 3,7,11,15,19,... the rule is -1+4n.
Sam Garratt
Fantastic Maths work Sam! I am thrilled to see you are learning about the 'nth term' within your Maths lessons. What would the nth term be for the following pattern: 6, 10, 14, 20, 24
If your sequence above is correct, there is no rule. Is your sequence suppose to say: 6, 10, 14, 18, 22? If this is the sequence you meant to write the rule is below:
2+4n because the sequence is going up in 4's but they're not multiples of 4. Therefore you need to add 2 to each number in the sequence - giving you +2. E.g. to find the 15th term in the sequence you would follow the rule. Answer =62
This comment has been removed by the author.
ReplyDeleteFantastic Maths work Sam! I am thrilled to see you are learning about the 'nth term' within your Maths lessons. What would the nth term be for the following pattern:
ReplyDelete6, 10, 14, 20, 24
If your sequence above is correct, there is no rule. Is your sequence suppose to say: 6, 10, 14, 18, 22? If this is the sequence you meant to write the rule is below:
Delete2+4n because the sequence is going up in 4's but they're not multiples of 4. Therefore you need to add 2 to each number in the sequence - giving you +2. E.g. to find the 15th term in the sequence you would follow the rule. Answer =62
Very good Sam! (You spotted my intentional mistake ....)
ReplyDeleteNow, try this:
If the nth term is -5n + 12, what would the first 5 terms in the sequence be?
7,2,-3,-8,-13
DeleteDo you agree?