Abstract
In this report, we consider two kind of general fractional variational problem depending on indefinite integrals include unconstrained problem and isoperimetric problem. These problems can have multiple dependent variables, multiorder fractional derivatives, multiorder integral derivatives and boundary conditions. For both problems, we obtain the Euler-Lagrange type necessary conditions which must be satisfied for the given functional to be extremum. Also, we apply the Rayleigh-Ritz method for solving the unconstrained general fractional variational problem depending on indefinite integrals. By this method, the given problem is reduced to the problem for solving a system of algebraic equations using shifted Legendre polynomials basis functions. An approximate solution for this problem is obtained by solving the system. We discuss the analytic convergence of this method and finally by some examples will be showing the accurately and applicability for this technique.
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Sayevand, K., Rostami, M.R. General fractional variational problem depending on indefinite integrals. Numer Algor 72, 959–987 (2016). https://doi.org/10.1007/s11075-015-0076-5
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DOI: https://doi.org/10.1007/s11075-015-0076-5
Keywords
- Fractional calculus
- Fractional variational problem
- Rayleigh-Ritz method
- Euler-Lagrange equation
- Isoperimetric problems