Advertisements
Advertisements
प्रश्न
Write the first five terms of the following sequence whose nth term is:
an = 2n2 − 3n + 1
उत्तर
an = 2n2 – 3n + 1
Put n = 1
A1 = 2(1)2 – 3(1) + 1 = 2 – 3 + 1 = 0
Put n = 2
A2 = 2(2)2 – 3(2) + 1 = 8 – 6 + 1 = 3
Put n = 3
A3 = 2(3)2 – 3(3) + 1 = 18 – 9 + 1 = 10
Put n = 4
A4 = 2(4)2 – 3(4) + 1 = 32 – 12 + 1 = 21
Put n = 5
A5 = 2(5)2 – 3(5) + 1 = 50 – 15 + 1 = 36
APPEARS IN
संबंधित प्रश्न
The 17th term of an AP exceeds its 10th term by 7. Find the common difference.
Write the first five terms of the following sequences whose nth term are:
`a_n = (n - 2)/3`
Write the first five terms of the following sequences whose nth terms are:
`a_n = (3n - 2)/5`
Find the indicated terms in each of the following sequences whose nth terms are:
`a_n = (3n - 2)/(4n + 5)`; `a_7 and a_8`
How many numbers of two digit are divisible by 3?
The 17th term of AP is 5 more than twice its 8th term. If the 11th term of the AP is 43, find its nth term.
The 6th term from the end of the AP: 5, 2, -1, -4, …., -31, is ______.
The 21st term of the AP whose first two terms are –3 and 4 is ______.
The 10th term from the end of the A.P. -5, -10, -15,…, -1000 is ______.
Which term of the A.P. : 65, 61, 57, 53, .............. is the first negative term?
