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JEE Mains · Maths · STD 12 - 1. relation and function

माना एक अवकलनीय फलन \(\mathrm{f}: \mathrm{R} \rightarrow(0, \infty)\) के लिए \(5 f(x+y)=f(x) \cdot f(y), \forall x, y \in R\) है। यदि \(\mathrm{f}(3)=320\), तो \(\sum_{\mathrm{n}=0}^5 \mathrm{f}(\mathrm{n})\) बराबर है :

  1. A \(6875\)
  2. B \(6575\)
  3. C \(6825\)
  4. D \(6528\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(6825\)

Step-by-step Solution

Detailed explanation

\(5 f ( x + y )= f ( x ) \cdot f ( y )\) \(5 f (0)= f (0)^2 \Rightarrow f (0)=5\) \(5 f ( x +1)= f ( x ) \cdot f (1)\) \(\frac{ f ( x +1)}{ f ( x )}=\frac{ f (1)}{5}\)…
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