The contents of Packages.zip, the archive file containing the packages required for the notebooks in all three semesters of this course, are as follows:

Arclength.m (2.6 KB) - Graphics commands for defining the arclength differential  
DEGraphics.m (8.3 KB) - Graphics displaying direction fields of differential equations and Euler's Method solutions of initial value problems  
DerivativeGraphics.m (3.4 KB) - Graphics commands for defining the derivative and Newton's method.  
IntegralGraphics.m (2.9 KB) - Graphics commands for defining the definite integral.  
LogAlgebra.m (961 B) - Replacement rules for algebraically manipulating Log  
PathIntegration.m (1.6 KB) - Commands for computing line integrals either symbolically or numerically in 2 dimensions  
PolarIntegral.m (3.4 KB) - Graphics commands for defining the area differential in polar coordinates  
RevolutionGraphics.m (1.5 KB) - Commands for visualizing volumes of revolution.