How do you write the nth term of the arithmetic sequence -26, -15, -4, 7,...?
1 Answer
Mar 5, 2017
Explanation:
The way to get any equation off an arithmetic sequence is using this:
# t(n) = a + (n - 1)(d) # d = the difference between two terms
n = term number
a = 1st term
As we can see from the sequence:
a = -26
d = 11
Substitute:
#-> t(n) = -26 + ( n - 1 )( 11 ) #
#-> t(n) = 11n - 37 #
P.S.
I'm not sure whether you want this type of nth term equation or the recursive one.
