“…The problem (1) was studied by using the Residual Power Series Method by Syam, M. (2018), Homotopy analysis method (HAM) by Huan et al (2017), Reproducing kernel Hilbert space method by Syam et al (2018), The fractional differential transformation (FDT) Rebenda and Smarda . (1978), Polynomial Least Squares Method by Caruntu et al (2019), Shifted Legendre Operational Matrix by Tripathi N. (2019), Chebyshev wavelets by Kazemi Nasab et al (2018), Orthonormal Bernoulli's polynomials by Sahu and Mallick. (2019), Orthonormal Bernstein polynomials by Abbas et al (2019).…”