Question

Find the first six terms of the sequence.

a1 = -7, an = 2 • an-1

Answer 1

@hartnn

Answer 2

i got -7, -14, -28, -56, -112, -224

Answer 3

Let me check if you are right or not...

Answer 4

Wrong way, will you find the 1000th term the same way ?

Answer 5

What is the condition given, write it properly..

Answer 6

oh!!!

Answer 7

-7, -14, -12, -10, -8, -6

Answer 8

now it makes sense

Answer 9

\(\large\color{black}{ a_n=a_1 \times r^{n-1}}\)

\(\large\color{black}{ a_6=a_1 \times r^{6-1}}\)

\(\large\color{black}{ a_6=(-7) \times 2^{5}=?}\)

Answer 10

\[a_n = 2 \cdot a_{n-1}\]

Is it??

Answer 11

yes

Answer 12

I showed how to find the 6th term -:(

Answer 13

What water in eyes said, is just a recursive way of writing that the common ratio is 2.

Answer 14

Hey, is it GP or AP??

Answer 15

-224

Answer 16

yes

Answer 17

Yeah, nice.. :)

Answer 18

wait so i was right before? now im confused

Answer 19

Can you find the 10th term in this sequence ?

Answer 20

You weren't

Answer 21

You can't just keep multiplying like this, the teacher will give you a zero for that.

Answer 22

-7, -14, -28, -56, -112, -224 it says first 6 terms!

Answer 23

Yes, but this is not the right approach though.

Answer 24

wait so why are we doing the 10th then?