Thread: sequences

Determine t3,t7, and tn for the arithmetic sequences with properties below

A) a=2x and d=5x

B) t14=46 and t19=100

Also, how would i create a spreadsheet file and graph for the sequence in B)

Thank you

Originally Posted by euclid2

Determine t3,t7, and tn for the arithmetic sequences with properties below

A) a=2x and d=5x

The general term of an arithmatic progressions is:



(assuming the zeroth term is ).

So:



and



Now just replace and with the given expressions and simplify.

RonL

Originally Posted by CaptainBlack

The general term of an arithmatic progressions is:



(assuming the zeroth term is ).

So:



and



Now just replace and with the given expressions and simplify.

RonL

It's actually since .

So and .

But yes, then substitute a and d.