I have posted these as a set of questions but I am putting 3 up in the "free" questions, as well.

I have posted these as a set of questions but I am putting 3 up in the "free" questions, as well. I am looking to build a relationship with a tutor that can help me the entire semester to learn this topic. I am willing to add a little to each question but I would like to get a consistent tutor, if possible.Topic is Electrical Properties of Material and Device Design2. Suppose T=0 and the Fermi-level Ef is a value Δ below the valence band-edge. Using the property of the full Fermi-Dirac distribution, express the total hole density p in the terms of a Δ and Ch where Ch is the constant in the formula for the density of state. Now assume that Ef is above the conduction band-edge by Δ, calculate the electron density as a function of Δ and Ce (also T=0).I believe Ch is Planck's constant square but not certain. (6.62x10^-34)^2