Find the first six terms of the sequence.

a1 = -8, an = 5 • an-1
@agent0smith

Question

Find the first six terms of the sequence.

a1 = -8, an = 5 • an-1
@agent0smith

agent0smith · Answer

agent0smith · Answer

Plug in a1 to find a2.

Then plug in a2 to find a3, and so on.

anonymous · Answer

Don't hate me but can we do it together because honestly like not understanding or an example

agent0smith · Answer

How'd you do that last one correctly? You can do this in the same way.

anonymous · Answer

someone sorta just gave me the answer

agent0smith · Answer

$$\Large a_1 = -8, \text{        and          } a_n = 5 • a_{n-1}$$Find a2: $$\Large a_2 = 5 • a_{2-1} = 5•a_1$$and you know what a1 is.

agent0smith · Answer

Once you have a2, find a3:$$\Large a_3 = 5 • a_{3-1} = 5 • a_{2}$$

anonymous · Answer

i got:  -8, -40, -200, -1000, -5000, -25,000

agent0smith · Answer

Good, as long as you worked them out yourself this time and weren't given them :P

anonymous · Answer

I did i basically just get multiplying the number before by 5

agent0smith · Answer

Exactly! :)

agent0smith · Answer

an is the term you want. an-1 is just the term before it.

anonymous · Answer

Ok thanks c: