Theorem 9.If k is even and 1,0 are odd positive integers, then Eq. (1) has prime period two solution if the condition (1– (C+D))(3e– d) < (e+d)(A+ B) , (20) valid, provided (C+D) and is 1 e (1 – (C+D)) – d (A+B) > 0. Proof.If k is even and 1, o are odd positive integers, then Xn = Xn-k and xn+1 = Xn–1= Xn-o. It follows from Eq.(1) that bQ P=(A+B) Q+(C+D) P – (21) (еР — dQ)" and bP Q= (A+B) P+(C+D) Q – (22) (e Q– dP)' Consequently, we get e P – dPQ = e (A+B) PQ– d (A+B) Q + e(C+D) P² - (C+D) dPQ– bQ, (23) and e Q – dPQ = e (A+B) PQ– d (A+ B) P +e(C+D) Q - (C+D) dPQ– bP. (24) By subtracting (24) from (23), we get b P+Q= (25) [e (1 – (C+D)) –d (A+B)]' where e (1– (C+D)) – d (A+B) > 0. By adding (23) and (24), we obtain e b² (1 – (C+ D)) (e+d) [K1 + (A+ B)][e K1 – d (A+B)]² PQ= (26)
Theorem 9.If k is even and 1,0 are odd positive integers, then Eq. (1) has prime period two solution if the condition (1– (C+D))(3e– d) < (e+d)(A+ B) , (20) valid, provided (C+D) and is 1 e (1 – (C+D)) – d (A+B) > 0. Proof.If k is even and 1, o are odd positive integers, then Xn = Xn-k and xn+1 = Xn–1= Xn-o. It follows from Eq.(1) that bQ P=(A+B) Q+(C+D) P – (21) (еР — dQ)" and bP Q= (A+B) P+(C+D) Q – (22) (e Q– dP)' Consequently, we get e P – dPQ = e (A+B) PQ– d (A+B) Q + e(C+D) P² - (C+D) dPQ– bQ, (23) and e Q – dPQ = e (A+B) PQ– d (A+ B) P +e(C+D) Q - (C+D) dPQ– bP. (24) By subtracting (24) from (23), we get b P+Q= (25) [e (1 – (C+D)) –d (A+B)]' where e (1– (C+D)) – d (A+B) > 0. By adding (23) and (24), we obtain e b² (1 – (C+ D)) (e+d) [K1 + (A+ B)][e K1 – d (A+B)]² PQ= (26)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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