I need some help with sequence and figuring out an equation for given sequence.
For example,
what is a equation for a sequence 10,6,10,6,...
another one is -1/4,-2/9,-3/16/-4/25
for this one I thought it would be -(n+1)/(n+2)^2 But i got it wrong.
third one is a1 = 10, a(n+1) = an/(an+1). how would u find a2, a3, a4, a5 from the give information?
Thanks.