B in an ap if sn n 4n + 1 then find the ap. 2
WebIn an AP, if s n =n (4n + 1), then find the AP. Solution: We know that, the n th term of an AP is Hence, the required AP is 5,13, 21,… Question 25: In an AP, if s n = 3n 2 + 5n and a k = 164, then find the value of k. Solution: Question 26: If s n denotes the sum of first n terms of an AP, then prove that s 12 =3(s 8-s 4) Solution: Question 27: WebDec 15, 2024 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...
B in an ap if sn n 4n + 1 then find the ap. 2
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WebIf Sn, the sum of first n terms of an AP is given by Sn = 3n2-4n, Find the nth term? WebApr 10, 2024 · The Indian Navy has released the official notification 1400 vacancies for the Indian Navy SSR Agniveer Exam 2024. The selection process includes a Computer …
WebIn an AP, if S n = n (4n + 1), find the AP. Advertisement Remove all ads Solution We know that, the n th term of an AP is a n = S n – S n – 1 a n = n (4n + 1) – (n – 1) {4 (n –1) + 1} ...... [∵ S n = n (4n + 1)] ⇒ a n = 4n 2 + n - (n – 1) (4 n – 3) = 4n 2 + n – 4n 2 + 3n + 4n – 3 = 8n – 3 Put n = 1, a 1 = 8 (1) -3 = 5 WebExample: Find the nth term of AP: 1, 2, 3, 4, 5…., a n, if the number of terms are 15. Solution: Given, AP: 1, 2, 3, 4, 5…., a n. n=15. By the formula we know, a n = a+(n-1)d. First-term, a =1. Common difference, d=2-1 …
WebSuppose a series of n terms is given by S n=a 1+a 2+...+a n Then S n−1=a 1+a 2+...+ a n−1(∀ n>1) and then we can write t n=S n−S n−1 ∀n≥2 for n=1 we have S 1=t 1On the basis of above information answer the following questions:If sum to n terms of a series is an 2+bn where a, b are constants then 5 th term of the series is. WebMay 5, 2024 · If an AP is Sn = n (4n+1), then find the AP. 0 votes. 1 answer. Find the common difference of the AP 4,9,14,…. If the first term changes to 6 and the common difference remains the same then write the new AP. asked Jan 20, 2024 in Class X Maths by priya (19.0k points) class-10. 0 votes. 1 answer.
WebAug 31, 2015 · 1 Answer Don't Memorise Aug 31, 2015 The first five terms are 9,13,17,21,25 Explanation: an = 4n +5 We can find terms 1 to 5 by substituting n respectively in the expression. an = 4n +5 So, a1 = 4 ⋅ (1) + 5 = 9 a2 = 4 ⋅ (2) + 5 = 13 a3 = 4 ⋅ (3) + 5 = 17 a4 = 4 ⋅ (4) + 5 = 21 a4 = 4 ⋅ (5) + 5 = 25 Answer link
WebIn an AP, if Sn = n (4n+1), then find the AP. Solution We know that, the nth term of an AP is; an= Sn−Sn−1 an= n(4n+1)−(n−1){4(n−1)+1} [∵ Sn= n(4n+1)] ⇒ an … flyff best solo classWebApr 10, 2024 · The Indian Navy has released the official notification 1400 vacancies for the Indian Navy SSR Agniveer Exam 2024. The selection process includes a Computer Based Test, Written Exam & Physical Fitness Test (PFT), and last stage of Medical Examination. Candidates applying for the exam must check the Indian Navy SSR Agniveer Eligibility … greenland abbreviationWebApr 14, 2024 · Then, Pearson’s R-value (above the threshold) was evaluated using ImageJ software containing the Coloc 2 package (Version 2.0.2 in Fiji), and the average values were calculated. flyff blade weaponsWebGiven, the expression for the sum of the terms is Sₙ = n (4n + 1) We have to find the AP. Put n = 1, S₁ = 1 (4 (1) + 1) = 4 + 1 = 5. Put n =2, S₂ = 2 (4 (2) + 1) = 2 (8 + 1) = 2 (9) = … flyff boardsWebAug 26, 2024 · Best answer Sn = n (4n + 1) Sn - 1 = (n - 1) [ 4 (n - 1) - 1] = (n - 1) [ 4n - 5] Sn - Sn - 1 = n (4n + 1) - (n - 1) (4n - 5) (a1 + a2 + a3 + - - - + an - 1 + an) - (a1 + a2 + … flyff boraWebSep 6, 2024 · we can solve this problem in atleast two ways. we will try both here first normal process Sn = n^2+4n S1 = 5 = first term S2 = 12 = sum of two terms second term = 12-5 = 7 common difference = 7-5 = 2 now T20 = a+ (20-1)*d = 5 + 19*2 = 5 +38 = 43 second way S20 = 20^2 + 4*20 = 400+80 = 480 S19 = 19^2 + 4*19 = 361 + 76 = 437 … flyff blade axe or swordWebIf you put n=1 into the S (n) formula, you get that the sum of the first 1 terms = 2/11. Now if you look at his a (n) formula that he works out and put n=1 into it, it does not equal 2/11. It equals 9/110 So the sum of the first 1 terms is 2/11, but the first term is not 2/11. Is there something I don't understand? Thanks in advance. greenland access trading