$h_1$

$h_2$

$h_3$

$b-\frac{V^{\prime }}{1+\lambda }$

$\frac{\left(3+\lambda \right)b^2\tau -V^{\prime }}{2\left(1+\lambda \right)}$

$\frac{\left(7+\lambda \right)b^3{\tau }^3-V^{\prime }}{6\left(1+\lambda \right)}$

$h_4$

$h_5$

$h_6$

$h_7$

$-\frac{V^{‴}}{6\left(1+\lambda \right)}$

$\frac{1}{1+\lambda }\left(3+\lambda \right)\tau b$

$\frac{\left(15+\lambda \right){\tau }^3{b}^4-V^{\prime }}{24\left(1+\lambda \right)}$

$-\frac{V^{‴}}{12\left(1+\lambda \right)}$