[(@1 + a3 + a5) - (a2 + a4)] [(B1 + B3 + B3) + A (B2 + B4)]' P+Q = (4.17) %3D while, by adding (4.15) and (4.16) and by using the relation p² + Q? = (P+Q)² – 2PQ for al P,Q E R, we have [(a1 + a3 + a5) - (a2 + a4)] [(B1 + B3 + B5) (a2 + a4) + A (B2 + B4) (a1 + a3 + a5)] PQ [(B1 + B3 + B3) + A (B2 + B4)]² [((B2 + B4) – (B1 + B3 + B5)) (A+1)] (4.18) Let P and Q are two distinct real roots of the quadratic equation

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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Show me the steps of determine yellow and the informatian is here

The main focus of this article is to discuss some qualitative behavior of
the solutions of the nonlinear difference equation
a1Ym-1+a2Ym-2+ a3Ym-3+ a4Ym–4+ a5Ym-5
Ут+1 — Аутt
т 3 0, 1, 2, ...,
B1Ym-1+ B2Ym-2 + B3Ym-3 + B4Ym-4 + B3Ym-5
(1.1)
where the coefficients A, a;, B; E (0, 0), i = 1, ..., 5, while the initial condi-
tions y-5,y-4,Y–3,Y–2, Y–1, yo are arbitrary positive real numbers. Note that
the special case of Eq.(1.1) has been discussed in [4] when az = B3 = a4 =
= a5 = B5 = 0 and Eq.(1.1) has been studied in [8] in the special case
B4
when a4 =
B4 = a5 = B5 = 0 and Eq.(1.1) has been discussed in [5] in the
special case when az = B5 = 0.
Transcribed Image Text:The main focus of this article is to discuss some qualitative behavior of the solutions of the nonlinear difference equation a1Ym-1+a2Ym-2+ a3Ym-3+ a4Ym–4+ a5Ym-5 Ут+1 — Аутt т 3 0, 1, 2, ..., B1Ym-1+ B2Ym-2 + B3Ym-3 + B4Ym-4 + B3Ym-5 (1.1) where the coefficients A, a;, B; E (0, 0), i = 1, ..., 5, while the initial condi- tions y-5,y-4,Y–3,Y–2, Y–1, yo are arbitrary positive real numbers. Note that the special case of Eq.(1.1) has been discussed in [4] when az = B3 = a4 = = a5 = B5 = 0 and Eq.(1.1) has been studied in [8] in the special case B4 when a4 = B4 = a5 = B5 = 0 and Eq.(1.1) has been discussed in [5] in the special case when az = B5 = 0.
Theorem 6 If (a1 + a3 + a5) > (a2 + a4) and (B1 + B3 + B5) > (B2 + B4),
then the necessary and sufficient condition for Eq.(1.1) to have positive so-
lutions of prime period two is that the inequality
[(A+ 1) ((B1 + B3 + Bs) – (B2 + B4)] [(a1 + a3 + as) – (a2 + a4)]?
+4 [(a1 + a3 + a5) – (a2 + a4)] [(B1 + B3 + Bs) (a2 + a4) + A (B2 + B4) (a1 + az + as)] > 0.
(4.13)
is valid.
proof: Suppose there exist positive distinctive solutions of prime period
two
..., P, Q, P,Q, .....
of Eq.(1.1). From Eq.(1.1) we have
a1Ym–1+a2Ym–2+a3Ym-3+¤4Ym-4+a5Ym–5
Ym+1 = Aym+
Biym-1 + B2ym-2 + B3Ym-3 + B4Ym-4 + B5Ym-5
(a1 + a3 + a5)P+ (a2 + a4) Q
(B1 + B3 + Bs) P+(B2 + B4) Q
(a1 + a3 + a5) Q+ (a2 + a4) P
(B1 + B3 + Bs) Q+ (B2 + B4) P
(4.14)
P = AQ+
Q = AP+
Consequently, we get
(B1 + B3 + Bs) P² + (B2 + B4) PQ = A(B1+ B3 + B5) PQ + A (B2 + B4) Q?
+(a1+ a3 + a5) P+ (a2+a4) Q,
(4.15)
and
(B1 + B3 + B3) Q² + (B2 + B4) PQ = A (B1 + B3 + B5) PQ + A (B2 + B4) p²
+ (a1 + a3 + a5) Q+ (a2 + a4) P.
(4.16)
By subtracting (4.15) from (4.16), we obtain
[(B1 + B3 + Bs) + A (B2 + B4)] (P² – Q²) = [(a1 + a3 +a5) – (a2 + a4)] (P – Q).
11
Since P+ Q, it follows that
[(a1 + a3 + a5) – (a2 + a4)]
[(B1 + B3 + B5) + A (B2 + B4)]'
P+Q =
(4.17)
while, by adding (4.15) and (4.16) and by using the relation
p² + Q? = (P+ Q)² – 2PQ for all
P,Q ER,
we have
[(a1 + az + a5) - (a2 + a4)] [(B1 + B3 + Bs) (a2 + a4) + A (B2 + B4) (a1 + az + a5)]
[(B1 + B3 + B5) + A (B2 + B4)]* [((B2 + B4) – (B1 + B3 + B5)) (A+1)]
PQ =
(4.18)
Let P and Q are two distinct real roots of the quadratic equation
t2 - (P+ Q)t + PQ = 0.
[(B1 + B3 + B5) + A (B2 + B4)] t – [(@1 + a3 + a5) – (a2 + a4)]t
[(a1 + az + a5) - (a2 + a4)] [(B1 + B3 + B5) (a2 + a4) + A (B2 + B4) (a1 + a3 + a5)]
+
[(81 + B3 + B5) + A (B2 + B4)] [((B2 + B4) – (B1 + B3 + Bs)) (A+1)]
0,
(4.19)
Transcribed Image Text:Theorem 6 If (a1 + a3 + a5) > (a2 + a4) and (B1 + B3 + B5) > (B2 + B4), then the necessary and sufficient condition for Eq.(1.1) to have positive so- lutions of prime period two is that the inequality [(A+ 1) ((B1 + B3 + Bs) – (B2 + B4)] [(a1 + a3 + as) – (a2 + a4)]? +4 [(a1 + a3 + a5) – (a2 + a4)] [(B1 + B3 + Bs) (a2 + a4) + A (B2 + B4) (a1 + az + as)] > 0. (4.13) is valid. proof: Suppose there exist positive distinctive solutions of prime period two ..., P, Q, P,Q, ..... of Eq.(1.1). From Eq.(1.1) we have a1Ym–1+a2Ym–2+a3Ym-3+¤4Ym-4+a5Ym–5 Ym+1 = Aym+ Biym-1 + B2ym-2 + B3Ym-3 + B4Ym-4 + B5Ym-5 (a1 + a3 + a5)P+ (a2 + a4) Q (B1 + B3 + Bs) P+(B2 + B4) Q (a1 + a3 + a5) Q+ (a2 + a4) P (B1 + B3 + Bs) Q+ (B2 + B4) P (4.14) P = AQ+ Q = AP+ Consequently, we get (B1 + B3 + Bs) P² + (B2 + B4) PQ = A(B1+ B3 + B5) PQ + A (B2 + B4) Q? +(a1+ a3 + a5) P+ (a2+a4) Q, (4.15) and (B1 + B3 + B3) Q² + (B2 + B4) PQ = A (B1 + B3 + B5) PQ + A (B2 + B4) p² + (a1 + a3 + a5) Q+ (a2 + a4) P. (4.16) By subtracting (4.15) from (4.16), we obtain [(B1 + B3 + Bs) + A (B2 + B4)] (P² – Q²) = [(a1 + a3 +a5) – (a2 + a4)] (P – Q). 11 Since P+ Q, it follows that [(a1 + a3 + a5) – (a2 + a4)] [(B1 + B3 + B5) + A (B2 + B4)]' P+Q = (4.17) while, by adding (4.15) and (4.16) and by using the relation p² + Q? = (P+ Q)² – 2PQ for all P,Q ER, we have [(a1 + az + a5) - (a2 + a4)] [(B1 + B3 + Bs) (a2 + a4) + A (B2 + B4) (a1 + az + a5)] [(B1 + B3 + B5) + A (B2 + B4)]* [((B2 + B4) – (B1 + B3 + B5)) (A+1)] PQ = (4.18) Let P and Q are two distinct real roots of the quadratic equation t2 - (P+ Q)t + PQ = 0. [(B1 + B3 + B5) + A (B2 + B4)] t – [(@1 + a3 + a5) – (a2 + a4)]t [(a1 + az + a5) - (a2 + a4)] [(B1 + B3 + B5) (a2 + a4) + A (B2 + B4) (a1 + a3 + a5)] + [(81 + B3 + B5) + A (B2 + B4)] [((B2 + B4) – (B1 + B3 + Bs)) (A+1)] 0, (4.19)
Expert Solution
Step 1

Given:

It is given that, the value of P and Q is as follows:

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and

Advanced Math homework question answer, step 1, image 2......(2)

To prove:

we have to prove that,

Advanced Math homework question answer, step 1, image 3

and

Advanced Math homework question answer, step 1, image 4

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