Multiplying by denominator but where s,r explain this step of determine red Theorem 3 Assume that a < 1 and|b (e +g + s) – d (c+ f +r)|+ |c (d +g +s) – e (b+ f +r)|+|f (d +e +s) – g (b +c+r)I+ |r (d +e +g)(d +e+ g) (b+ c+ f),s (b +с+f)|(12)then the positive equilibrium point (7) of Eq. (1) is locally asymptotically sta-ble.Proof: It follows by Theorem 1 that Eq.(10) is asymptotically stable if allroots of Eq.(11) lie in the open disk is |A| < 1 that is if |e4|+ |p3| + |p2|+\ei|+ \po] < 1,(1 – a) [b (e +g + s)|a| +(d +e +g+ s) (b + с +f+r)d (c +f +r)](1 – a) [c (d +g +s)(d +e +g+ s) (b +c + f + r)|(1 – a) [f (d+ e + s)(d + e +g+ s) (b +c+ ƒ +r)(1– a) [r (d+ e + 9) – s (b +c+ f).(d +e +g+s) (b+c + f +r)< 1,e (b + f +r)] |g (b +c+r)]and so- - a) [b (e +g + s) – d (c + f +r)](d +e +g+ s) (b+ c + f +r)|(1 – a) [e (d +g + s)(d +e +g+s) (b +c+ f +r)|(1 – a) [f (d + e +s)(d +e +g+s) (b +c + f +r)(1 – a) [r (d +e +g)(d +e +g+s) (b +c + f +r)e (b + f +r)]g (b +c+r)](b +c+ f)]- S< (1- а),а <1,or16 (e + g +s) – d (c+ f +r)|+ |c(d +g+s) – e (b+ f +r)|+\f (d +e +s) – g (b +c+r)|+ |r (d +e + g) – s (b +c+ f)|(d +e +g) (b+c+ f).)Thus, the proof is now completed. The objective of this article is to investigate some qualitative behavior ofthe solutions of the nonlinear difference equationбxn-1 + сх,n-2 + fxn-3 + rtn-4Xn+1 = axn +n = 0, 1, 2, .. (1)dxn-1 + en-2 + gxn-3 + sxn-4where the coefficients a, b, c, d, e, f, g,r, s E (0, 0), while the initial con-ditions x-4,X –3,X –2, x – 1, xo are arbitrary positive real numbers. Note thatthe special cases of Eq.(1) has been studied discussed in [11] when f = g =0 and Eq. (1) has been studied discussed in [35] in the special caser = s =when r = s = 0.

Answered: Image /qna-images/answer/8bd01d8d-25fa-4bcf-88a9-6a114fc1f281.jpg

Theorem 3 Assume that a <1 and |6 (e +g +s) – d (c+ f +r)|+|c (d +g +s) – e (b + f +r)| +|f (d +e +s) – g (b +c+r)|+ |r (d +e +g)– s (b +c+ f)| < (d+e+g) (6+c+ f), (12) then the positive equilibrium point (7) of Eq.(1) is locally asymptotically sta- ble. Proof: It follows by Theorem 1 that Eq.(10) is asymptotically stable if all roots of Eq.(11) lie in the open disk is |A| < 1 that is if |p4|+ |p3| + |p2| + leil+ |po] < 1, d (c +f +r)] (1 – a) [b (e +g +s) |a| + (d +e +g+s) (b +c + f +r) |(1 – a) [c (d +g +s) (d +e +g+s) (b +c +f + r) (1 – a) [f (d+e +s) (d+e +g+s) (b +c+ f +r) (1 – a) [r (d + e + g) (d +e +g+ s) (b+c + f +r) e (b + f +r)]| g (b +c+r)] s (b +c+ f)]| | < 1, and so (1 – a) [b (e +g + s) – d (c + f +r)]| (d +e +g+ s) (6+c + f +r) |(1 – a) [c (d +g +s) – e(b +f +r)]| (d +e +g+s) (6 +c+ f +r) (1 – a) [f (d +e +s) (d +e +g+s) (b +c + f +r) (1 – a) [r (d +e +g) - (d +e +g+s) (b +c + f +r) g (b +c+r)]| (b +c+ f)]| < (1– a), a < 1, or |6 (e +g +s) – d (c+ f +r)|+|c(d +g+s) – e (b+ f +r)| +If (d +e +s) – g (b +c+r)+|r (d +e +g) – s (b +c+ f)| ((d +e +g) (b+c+ f). Ca Thus, the proof is now completed.

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.7: Distinguishable Permutations And Combinations

Problem 29E