Question

a1=2 and an=3(an-1)^2??
A 2,12,27
b 3,12,27
c 2,12,432
d 3,12,432

Answer 1

@rvc can you help me with this??

Answer 2

@Nnesha can you help???

Answer 3

so you have a_2
find a_2 by replace n with 2

Answer 4

ok :)
THANKYOU!!!

Answer 5

\[a_n=3(a_{n-1})^2 \\ a_2=3(a_{2-1})^2 \\ a_2=3(a_1)^2\\ a_2=3(2)^2 \\a_2=3(4) \\ a_2=12\]
I will go ahead and give this one since all choices have a_2 is 12
then find a_3 by taking that same thing involving n and replacing n with 3

Answer 6

is that \(a_n=3a_{n-1}^2\)

Answer 7

do you think its d or b

Answer 8

you didn't state what are you looking for by the way
is a_2?

Answer 9

the first 3 terms

Answer 10

all i see is a1 given to you and the the equation that generates the term of this sequence

Answer 11

from you choices it appears you are only looking for one term?
are you sure that you are in need of 3 terms?

Answer 12

yes

Answer 13

then why the need of multiple choice answers?

Answer 14

I would ask you to recheck, did the question say
find the 3th term of the sequence or find the first three terms?

Answer 15

\[a_1,a_2,a_3 \text{ are the first three terms } \]
it sounds like they are asking you to state a_1 and a_2 anyways even though they are both given...
you need to only really find the third term
\[a_n=3 \cdot a_{n-1}^2\]
have you replaced n with three yet ?

Answer 16

hmm where a_2 i don't see it

Answer 17

all the choices have a_2 is 12
technically it is given

Answer 18

which represents the first 3 terms of the sequence? that the question with the prob

Answer 19

hmm it seems to me a though those given number are just one term? wouldn't you agree

Answer 20

a_1 is the first term
a_2 is the second term
a_3 is the third term
there are three terms in each choice

Answer 21

hmm the choices say a) b) c) d)
where do you see a1, a2,a3?

Answer 22

He said find the first three terms

Answer 23

Those terms are called a_1,a_2,a_3

Answer 24

a_1 and a_2 are already given

Answer 25

that is the first and second term

Answer 26

we just need to find the third term

Answer 27

ohhh ok i got it its B you take the a2 into the equation and the 3 4 and you get B thankyou both for helping me :D:D

Answer 28

for the problem is miss worded and not stated correctly!
but ate any rate finding the first three term
just do as @freckles said

Answer 29

first of all @aswemayknow why are you saying the first term is 3
a_1 is given as 2 wasn't it?
also can is you replace the n's with 3's
and do the computation

Answer 30

Thankyou :D:D

Answer 31

oh my bad! i realized my mistake
heheh each choice is given 3 terms

Answer 32

\[a_n=3 \cdot a_{n-1}^2 \]
put n as 3
\[a_3=3 \cdot a_{3-1} ^2 \]
3-1 is 2
what is a_2 ?

Answer 33

hehe
B is not correct pal
ssecond term is 12 first term is 2 given to you

Answer 34

B and D cannot be true
since the first term is a1=2
for A and C since they both have a2=12
we need a3 to see which is true

Answer 35

use what @freckles did \(a_3=3a_2^2=2(12)^2\)

Answer 36

\[3(12)^2 \]

Answer 37

yep 3 I'm sloppy today no focus heheh