English: And third form that we wrote this as was that ψ_(k)(x) can be written as C_(n)e^(i(k+G_(n))x) where G_(n) is $n\frac{2\pi}{a}$.
Telugu: మనము దీనిని వ్రాసిన మూడవ రూపం ఏమిటంటే, ψ_(k)(x) ని C_(n)e^(i(k+G_(n))x) అని వ్రాయవచ్చు, ఇక్కడ G_(n) = $n\frac{2\pi}{a}$.