Let fn be the n-th Fibonacci number of Example 3c in 8.1, k=n k=n Σ'=1+2+...+ B₁=k²= 1² +2²+. k=1 k=1 by definition fo = Ao = Bo = 0. (a) Give a recursive definition of the numbers fn, An, Bn with n20 +n²;

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Let fn be the n-th Fibonacci number of Example 3c in 8.1.
k=n
k=n
Σ'=1+2+...+8, B₁=k²= 1² +2²+.
k=1
k=1
by definition fo = Ao = Bo = 0.
(a) Give a recursive definition of the numbers fn, An, Bn with n ≥ 0
(d) Using only part (a), show that
X
X
f(x)=x+xf(x) + x²f(x), A(x)=xA(x) +
B(x) = xB(x) +
(1-x)²¹
(1-x)²
Hint: You'll need to use identities such as the following:
31
1
1
(--(---)-([^) - ¹2m(x-1)x³-²2,
=
=
Σ
(1-x)³
1-2
n=0
n=0
+ n²;
+
22-2
(1-x)³
Transcribed Image Text:Let fn be the n-th Fibonacci number of Example 3c in 8.1. k=n k=n Σ'=1+2+...+8, B₁=k²= 1² +2²+. k=1 k=1 by definition fo = Ao = Bo = 0. (a) Give a recursive definition of the numbers fn, An, Bn with n ≥ 0 (d) Using only part (a), show that X X f(x)=x+xf(x) + x²f(x), A(x)=xA(x) + B(x) = xB(x) + (1-x)²¹ (1-x)² Hint: You'll need to use identities such as the following: 31 1 1 (--(---)-([^) - ¹2m(x-1)x³-²2, = = Σ (1-x)³ 1-2 n=0 n=0 + n²; + 22-2 (1-x)³
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