Substitute into the right side (spatial operator):The operator is written in two equivalent forms: −ℏπ2m(∂π∂xπ+∂π∂yπ+∂π∂zπ)ψ=−ℏπ2m∇πψ-\frac{...

Substitute into the right side (spatial operator):The operator is written in two equivalent forms: −ℏπ2m(∂π∂xπ+∂π∂yπ+∂π∂zπ)ψ=−ℏπ2m∇πψ-\frac{\hbar^\pi}{2m} \left( \frac{\partial^\pi}{\partial x^\pi} + \frac{\partial^\pi}{\partial y^\pi} + \frac{\partial^\pi}{\partial z^\pi} \right) \psi = -\frac{\hbar^\pi}{2m} ...