Which is a recursive formula for the sequence 99.4, 0, –99.4, –198.8, where f(1) = 99.4?

1 Answer
Jun 27, 2018

Notice that in our sequence is

#0-99.4=-99.4#
#-99.4-99.4=0#
#-198.8-99.4=99.4#...

So we are dealing with an arithmetic sequence with difference -99.4.

Each term is build up "adding" #-99.4# to prior term.

So the recursive formula is

#f(n)=f(n-1)+(-99.4)#