Dhivya Dharshini Asked a Question
October 16, 2020 7:16 ampts 30 pts
X 27. Find the radius of convergence of the power series 1-X-= F, + F,x + F.x + F are the Fibonacci numbers, a =t and B = 1-V5 a-B 5 and B= 1-V5 a-B 2 2 (B) 1/a (A) (D) None (C) 2a
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  • Deepak singh thankyou
    see attachment option b is correct
    • cropped5209405041034532655.jpg
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  • Srinath Best Answer
    The answer is 1/a. Just take the limit as n tends to infinity, for F(n+1)/F(n). Hint : b/a < 1. What happens to (b/a)^n as n tends to infinity??
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    Dhivya Dharshini
    Can we take modulus while doing root test?
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