Exercises Find f(1), (2), (3), (4), and f(5) if f(n) is defined recursively by f(0) = 3 and for n = 0, 1, 2, ... a) f(n+1)=-2f(n). b) f(n+1)=3f(n) +7. c) f(n+1)= f(n)² - 2f(n)-2. d) f(n+1)=3(n)/3 Give a recursive definition of the sequence (an). n = 1. 2. 3... if a) a = 6n. c) a₁ = 10". an b) a =2n+1. d) a,, = 5. 6.10