In this case multiplying the previous term in the sequence by 2 2 gives the next term. Lets write out S sub n. To derive this formula first write a general geometric series as.
Also it can identify if the sequence is arithmetic or geometric.
Let the elements of the sequence are denoted by. S sub n is going to be equal to youll have your first term here which is an a and then whats our second term going to be. The calculator will generate all the work with detailed explanation. An 15n1 a n 1 5 n - 1.