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{a1, a2…………., a4……..} is a progression where an = n2/(n3+200). The largest term of this progression is:
  1. a6
  2. a7
  3. a8
  4. none

Aditya Kartikeya , 11 Years ago
Grade 10
anser 1 Answers
Y RAJYALAKSHMI
On differentiating w.r.t n & equating to 0, we get (n3 + 200) * 2n – n2* (3n2) = 0
=> n3 = 400  => n = 7.3
Since n is a naturanl no, on verification we can find that an attains maximum value at n = 7
 
Ans = a7 
Last Activity: 11 Years ago
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