FAN + MEDAL
What are the explicit equation and domain for an arithmetic sequence with a first term of 5 and a second term of 2?

Question

FAN + MEDAL
What are the explicit equation and domain for an arithmetic sequence with a first term of 5 and a second term of 2?

solomonzelman · Answer

domain for n, or domain for just the terms of the sequence ?

solomonzelman · Answer

Domain for all terms of sequence (it is probably assumed to be ∞) ... So, I have no better way than writing  {5,2-1,-4,-7 ...}

anonymous · Answer

attachment

anonymous · Answer

$$a _{n}= a _{1} * q ^{n-1}$$
this is the equation to find explicit terms

anonymous · Answer

i worked it out and got The answer C

anonymous · Answer

here a= 5 and q=2/5

solomonzelman · Answer

n is the number of a term in a sequence. So n≥1 (where the doamin is all whole numbers) as there can be 1st or 2nd, 3rd and on  terms  but not -1st or 0.5th .

solomonzelman · Answer

And d=-3, so you are correct.

solomonzelman · Answer

@aryandecoolest  this one is arithmetic, not geometric.

solomonzelman · Answer

I would kill my teacher if it was geometric :)

anonymous · Answer

so she asked for arithmetic itself @SolomonZelman  )

solomonzelman · Answer

arithmetic itself? don't really get your point -:(

anonymous · Answer

Thanks SOLO

anonymous · Answer

doesn't matter , she got the answer ) @SolomonZelman  :)

solomonzelman · Answer

Yeah, she did it, and got it herself as opposed to most of the people on here.

Btw, are you south from the equator, or summer schooling ?

anonymous · Answer

asking me? @SolomonZelman