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Purpose
The purpose of this paper is to solve the population balance equations, by applying rationalized Haar functions, described by stretched differential equation.
Design/methodology/approach
An illustrative example is given and numerical results are compared with Block‐Pulse, Wavelet‐Galerkin and Shifted‐Legendre methods.
Findings
The results show the superiority of this method in comparison with the Block‐Pulse and the weighted residual methods.
Originality/value
The paper is of value in introducing the scaled operation matrix and also the method is straightforward and suitable for digital computation.
© Emerald Group Publishing Limited
2008
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