SOLUTION: find the nth term of an A.P. whose (r+1)th term is 4r-3

Question 214365: find the nth term of an A.P. whose (r+1)th term is 4r-3
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the nth term of an A.P. whose (r+1)th term is 4r-3
------------------------------
Formula: a(n) = a(1) + (n-1)d
----------------------------------
Your Problem:
If r+1 = 1, r = 0
Therefore a(1) = 4*0-3 = -3
-----------------------------------
If r+1 = 2, r = 1
Therefore a(2) = 4*1-3 = 1
-----------------------------------
So d = a(2)-a(1) = 1-(13) = 4
=-----------------------------------
Your Problem:
To find the nth term:
If r+1 = n, r = n-1
Therefore a(n) = 4(n-1)-3 = 4n-7
=========================================
Cheers,
Stan H.
RELATED QUESTIONS
find the fifth term an nth term of the geometric sequence... (answered by srinivas.g)

(1.)Find the number of terms in an A. P whose sum is 1340 with the first term being 3 and (answered by KMST)

an A.P whose first term is 3 and end term is 48 it has the sum of it first end term=225... (answered by josgarithmetic)

1. Find a formula for the nth term of the following sequence: 4, 12, 36, 108, 324, . . .... (answered by htmentor)

The nth term of a series is 1/2(2n-1). Write down the (n+1)th... (answered by ikleyn)

Find the sum of first 15 terms of an AP., whose nth term is... (answered by mananth)

Find the sum of n terms of a G.P. whose nth term is... (answered by amalm06,ikleyn)

The sum of the first n terms of a series is 5n^2-2n. The r-th term is... a) 6r+3 (answered by ikleyn,incline dybala)

The Question: "The nth term of a series is {{{ (1/2)(2n-1) }}}. Write down the (n+1)th (answered by stanbon)