On The Solution of Ordinary Differential Equation with Variable Coefficients using Aboodh Transform
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1 Aances in Theoretical and Applied Mathematics ISSN Volume 11, Number 4 (2016), pp Research India Publications On The Solution of Ordinary Differential Equation with Variable Coefficients using Aboodh Transform 1,3 Mohand M. Abdelrahim Mahgoub, 1,4 Khalid Suliman Aboodh, 2,3 Abdelbagy A.Alshikh 1 Department of Mathematics, Faculty of Science & technology, Omdurman Islamic Uniersity, Khartoum, Sudan. 2 Mathematics Department Faculty of Education Alzaeim Alazhari Uniersity- Khartoum Sudan. 3 Mathematics Department Faculty of Sciences and Arts Almikwah -Albaha Uniersity- Saudi Arabia. 4 Department of Mathematics, Bisha Faculty of Science & Arts King Khalid Uniersity, Saudi Arabia. Abstract In this paper, we apply a new integral transform '' Aboodh transform'' to sole some ordinary differential equation with ariable coefficients, The result reeals that the proposed method is ery efficient, simple and can be applied to linear and nonlinear differential equations. Keyword: Aboodh transform- differential equations 1. INTRODUCTION There are seeral integral transforms [1] like, Laplace Transform, Fourier Transform, Sumudu Transform [2-3], Elzaki Transform [4-6], ZZ Transform [7], Natural Transform and Aboodh Transform, to crack the DEs and IEs. Of these the most widely used transform is Laplace Transform. Recently, Khalid Aboodh, has introduced a new integral transform, named the Aboodh transform[8-11],and it has further applied to the solution of ordinary and partial differential equations. This transformation has deeper connection with the
2 384 Mohand M. Abdelrahim Mahgoub et al. Laplace and Elzaki Transform. The main objectie is to introduce solution of Ordinary Differential Equation with Variable Coefficients by using Aboodh transform.the plane of the paper is as follows: In section 2, we introduce the basic idea of Aboodh transform, Application in 3 and conclusion in 4, respectiely. 2. DEFINITIONS AND STANDARD RUSELTS Aboodh transform : Definition : A new transform called the Aboodh transform defined for function of exponential order we consider functions in the set A, defined by: A = {f(t): M, k 1, k 2 > 0, f(t) < Me t For a gien function in the set M must be finite number,k 1, k 2 may be finite or infinite. Aboodh transform which is defined by the integral equation A[f(t)] = K() = 1 0 f(t)e t dt t 0, k 1 k 2 (1) Aboodh transform of some functions : A(1) = 1 2, A(tn ) = n! n+2, A(eat ) = 1 2 a A(sin(at)) = a ( 2 +a 2 ), A(cos(at)) = 1 ( 2 +a 2 ) Aboodh transform of deriaties : Theorem I If Aboodh transform of the function f(t) gien by A[f(t)] = K(), then: 1) A[f (t)] = K() f(0), A[f (t)] = 2 K() f (0) f(0) A[f (n) (t)] = n K() 2) (i) A{tf(t)} = d k() 1 k() (ii) A{tf (t)} = d n 1 f (k) (0) k=0. 2 n+k f(0) [k() ] 1 f(0) [k() ],
3 On The Solution of Ordinary Differential Equation with Variable Coefficients 385 (iii) A{tf (t)} = d [2 k() f (0) f(0)] 1 [2 k() f (0) f(0)] () A{t 2 f (t)} = d2 k() 2 (i) A{t 2 f (t)} = 2 d2 k() d k() 2 f(0) d k() + 2k() 2 f (0) 3 Proof 2) (i) A[f(t)] = K() = 1 0 f(t)e t dt d K() = du K () = d 1 0 f(t)e t = ( 1 e t ) 0 = A(tf(t)) 1 K() (tf(t))dt + A(tf(t)) = d du K() 1 A(K()). dt = d (1 e t ) f(t)dt e t f(t)dt (i) A{t 2 f (t)} = d [ 2 d k() + 2k() f (0) 2 ] = ( 2 d2 k() 2 = 2 d2 k() 2 2 d k() + 4 d k() + 2k() 2 f (0) 3 2 d k() 2k() + 2 f (0) 3 ) 3. APPLICATION In this section: we apply the aboe theorem to find Aboodh transform for some differential equations Example I Sole the differential equation: y + ty y = 0 (2) With the initial condition, y(0) = 0, y (0) = 1 (3)
4 386 Mohand M. Abdelrahim Mahgoub et al. Solution Using the differential property of Aboodh transform Eq.(2) can be written as 2 K() 1 d k() k() k() = 0 d k() 3k() + 2 k() = 1 d k() ( 3)k() = 1 2 (4) This is a linear differential equation for unknown function k, hae the Solution in the form k() = ce1 2 2 and C = 0, then: k() = 1 3 (5) By using the inerse Aboodh transform we obtain the Solution in the form of y(t) = t (6) Example II Sole the differential equation: y + ty 4y = 6 (7) With the initial condition, y(0) = 0, y (0) = 0 (8) Solution Using the differential property of Aboodh transform Eq.(7) can be written as 2 K() 2 d [k() 2k() 4k()] = d k() 8k() + 2 k() = 6 2 d k() ( ) k() = 3 3 (9)
5 On The Solution of Ordinary Differential Equation with Variable Coefficients 387 This is a linear differential equation for unknown function k, hae the Solution in the form k() = Ce and C = 0, then: k() = 6 4 (10) By using the inerse Aboodh transform we obtain the Solution in the form of y(t) = 3t 2 (11) Example III Sole the differential equation: t y + (1 2t)y 2y = 0 (12) With the initial condition, y(0) = 1, y (0) = 2 (13) Solution Using the differential property of Aboodh transform Eq.(12) can be written as d [ k()] + 1 [ k()] +k() 1 2 [ d [1 k()]] + 1 [1 k()] 2k() = d k() + 2 d k() 2k() + 2k() = 0 ( 2 2) d k() (2 2)k() = 0 (14) This is a linear differential equation for unknown function k, hae the Solution in the form k() = C 2 2 and C = 1, then:k() = (15) By using the inerse Aboodh transform we obtain the Solution in the form of y(t) = e 2t (16)
6 388 Mohand M. Abdelrahim Mahgoub et al. Example IV Sole the differential equation: t 2 y + 4ty + 2y = 12t 2 (17) With the initial condition, y(0) = 0, y (0) = 0 (18) Solution Using the differential property of Aboodh transform Eq.(17) can be written as 2 d2 k() d k() + 2k() 4 d k() 4k() + 2k() = 24 4 By simplifying aboe equation, we hae d 2 k() 2 = 24 6 (19) The solution of this equation can be written in the form. k() = c 1 + c 0 (20) By substituting the initial condition (30) into equation (32) we get k() = = (21) By using the inerse Aboodh transform we obtain the Solution in the form of y(t) = 3 5 t2 (22) CONCLUSION The '' Aboodh transform, whose fundamental properties are presented in this paper, is little known and not widely used. In this paper, we apply a new integral transform '' Aboodh transform'' to sole some ordinary differential equation with ariable coefficients, The result reeals that the proposed method is ery efficient, simple and can be applied to linear and nonlinear differential equations
7 On The Solution of Ordinary Differential Equation with Variable Coefficients 389 REFERENCES [1] Lokenath Debnath and D. Bhatta. Integral transform and their Application second Edition, Chapman & Hall /CRC (2006). [2] G.K.watugala, simudu transform- a new integral transform to Sole differential equation and control engineering problems.math.engrg Induct.6 (1998),no 4, [3] Hassan Eltayeb and Adem kilicman, A Note on the Sumudu Transforms and differential Equations, Applied Mathematical Sciences, VOL, 4,2010, no.22, [4] Tarig M. Elzaki, (2011), The New Integral Transform Elzaki Transform Global Journal of Pure and Applied Mathematics, ISSN , Number 1, pp [5] Mohand M. AbdelrahimMahgob and Tarig M. Elzaki, Elzaki Transform And Power Series Expansion On A Bulge Heaiside Step Function, Global Journal of Pure and Applied Mathematics. ISSN Volume 11, Number 3 (2015), pp [6] Tarig M. Elzaki&Salih M. Elzaki, (2011), On the Elzaki Transform and Ordinary Differential Equation With Variable Coefficients, Aances in Theoretical and Applied Mathematics. ISSN Volume 6, Number 1, pp [7] Zain Ul Abadin Zafar, ZZ Transform method, IJAEGT, 4(1), , Jan (2016).. [8] K. S. Aboodh, The New Integral Transform Aboodh Transform Global Journal of pure and Applied Mathematics, 9(1), 35-43(2013). [9] K. S. Aboodh, Application of New Transform Aboodh transform to Partial Differential Equations, Global Journal of pure and Applied Math, 10(2), (2014). [10] Abdelilah K. Hassan Sedeeg and Mohand M. Abdelrahim Mahgoub, Aboodh Transform Homotopy Perturbation Method For Soling System Of Nonlinear Partial Differential Equations, Mathematical Theory and Modeling Vol.6, No.8, 2016, [11] Abdelbagy A. Alshikhand Mohand M. Abdelrahim Mahgoub, A Comparatie Study Between Laplace Transform and Two New Integrals ELzaki Transform and Aboodh Transform, Pure and Applied Mathematics Journal2016; 5(5):
8 390 Mohand M. Abdelrahim Mahgoub et al.
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