Question

In this lesson, you compared a recursive rule and an explicit rule used to define a sequence. For example, in the sequence 1, 3, 6, 10, 15, 21, … a recursive rule is an = an-1 + n. An explicit rule for the same sequence is (n2 + n)/2. Which rule do you think is easier to use when finding a term in the sequence? Why?

Answer 1

And u didnt call me : P

Answer 2

try to use the first one, to find a100

Answer 3

you will need to find a99 a98, and so on

Answer 4

Can you explain the whole thing, I am so lost....

Answer 5

in recursive form you alway need to know the predecessor therm, in explicit form you dont need it

Answer 6

always*