Question

What are the first 5 terms of the sequence a1 - -2,an= 4an-1

Answer 1

I can't read that

Answer 2

does - - mean = by chance?

Answer 3

Never seen that notation.
I have only ever seen = to mean equal.

Answer 4

Subtraction and Negative 2

Answer 5

\[a_1--2,a_n=4a_n-1\]
this?

Answer 6

this still doesn't make any sense

Answer 7

Yes

Answer 8

maybe you mean this:
\[a_1 \color{red}{=}2 \\ a_n=4a_{\color{red}{n-1}} ?\]

Answer 9

Yes but it was written in another way or form

Answer 10

or this:
\[a_1 \color{red}{=}-2 \\ a_n=4a_{\color{red}{n-1}} ?\]

Answer 11

How is it written then? And how could the answer by yes if it is written in another way?

Answer 12

Well I guess we can just do the one I think it is as an example so maybe you can try to do the one that is on your paper.

\[a_1=2 \\ a_n=4a_{n-1} \\ \text{ replace } n \text{ with } 2 \\ a_2=4a_{2-1} \\ a_2=4a_1 \\ \text{ you are given } a_1 \text{ in the first line here }\]
so plug it in