Advertisements
Advertisements
प्रश्न
is the Consider the expression an = 3n2 + 1,AP .
उत्तर
Consider the expression an = 3n2 + 1,
For n = 1, a1 = 3(12) + 1 = 8
For n = 2, a2 = 3(22) + 1 = 17
For n = 3, a3 = 3(32) + 1 = 32
For n = 4, a4 = 3(42) + 1 = 53
The first four terms are 8, 17, 32, 53.
The difference between each consecutive is not same.
Hence this is not an A.P.
APPEARS IN
संबंधित प्रश्न
In the following situation, involved make an arithmetic progression? and why?
The taxi fare after each km when the fare is ₹ 15 for the first km and ₹ 8 for each additional km.
Following are APs or not? If they form an A.P. find the common difference d and write three more terms:
1, 3, 9, 27 …
State whether the following sequence is an Arithmetic Progression or not:
3, 6, 12, 24,......
Write the next two terms of A.P. whose first term is 3 and the common difference is 4.
For the following arithmetic progressions write the first term a and the common difference d:
−1.1, −3.1, −5.1, −7.1, ...
Find d if t9 = 23 व a = 7
Find first four terms of an A.P., whose first term is 3 and common difference is 4.
The list of numbers – 10, – 6, – 2, 2,... is ______.
If the nth terms of the two APs: 9, 7, 5,... and 24, 21, 18,... are the same, find the value of n. Also find that term.
In which of the following situations, do the lists of numbers involved form an AP? Give reasons for your answers
The amount of money in the account of Varun at the end of every year when Rs 1000 is deposited at simple interest of 10% per annum.
