Question

a[1] = 2 and a[n] =5a[n-1] for n ≥2 (recursion formula) Write the first four terms of each sequence??

Answer 1

An = 5(An-1)

An = 5^2(An-2)

An = 5^3(An-3)

An = 5^n(A0) then right?

Answer 2

or is it:

An = 5^n+1 (A1).... lets make a table and determine that..

A1 = 2
A2 = 10
A3 = 50
A4 = 250
A5 = 6250 right?

Answer 3

A5 = 2.5^4 = 1250

Answer 4

lol.... 6250; thats a typo

Answer 5

250*5 = 1250

Answer 6

A4 = 2.5^3 = 250; yay!! discrete math works