A cubic surface is defined as the set of zeroes of a homogeneous polynomial f of degree three in three-dimensional real projective space given by S = {(x : y : z : w) ∈ P³(R)| f (x, y, z, w) = 0}. The geometric classification ...

Developmental mathematics courses are historically difficult classes for community college students. The failure rate of these courses is alarmingly high. Supplemental Instruction (SI) was developed to assist students in ...