A sequence is defined recursively by the following rules:

Question

f(1)=3
f(n+1)=2⋅f(n)−1
Which of the following statements is true about the sequence? Select all that apply.
f(3)=10
f(2)=5
f(4)=18
f(6)=66
f(5)=33

Answer 1

well, just list the first few elements and check:
f(1) = 3
f(2) = 2*3-1 = 5
f(3) = 2*5-1 = 9
and so on