-\phi_i\left( -\frac{0}{\tilde{\gamma}_{ps}}- \frac{\tilde{\gamma}_{rs}^{(s)}}{\tilde{\gamma}_{ss}\tilde{\gamma}_{ps}} \right)\left( \frac{0+\tilde{\gamma}_{ps}}{\tilde{\gamma}_{ss}} \right)e^{ \frac{0}{\tilde{\gamma}_{ps}} + \frac{\tilde{\gamma}_{rs}^{(s)}}{\tilde{\gamma}_{ss}\tilde{\gamma}_{ps}} }