2.6. For a device with M₁ = 1 × 10¹8 cm³, tox=2.5 nm, and VFB = -0.752 V, plot In Q vs. VGB in weak inversion, using (a) (2.6.8) with (2.6.12);

(b) (2.6.26) with (2.6.27); and (c) (2.6.34) with (2.6.35). Comment on the accuracy of the last two approaches.