Table 1 Values of the successive approximations ${\mathit{\alpha }}_{\mathit{n}}\mathbf{(}\mathit{t}\mathbf{)}$ and ${\mathit{\beta }}_{\mathit{n}}\mathbf{(}\mathit{t}\mathbf{)}$ , $\mathit{n}\mathbf{=}\mathbf{1}\mathbf{,}\mathbf{2}\mathbf{,}\mathbf{3}\mathbf{,}\mathbf{4}\mathbf{,}\mathbf{5}$

${\beta }_1(t)$

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${\beta }_2(t)$

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${\beta }_3(t)$

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${\beta }_4(t)$

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${\beta }_5(t)$

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${\alpha }_5(t)$

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${\alpha }_4(t)$

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${\alpha }_3(t)$

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${\alpha }_2(t)$

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${\alpha }_1(t)$

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