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Some Useful Math
Definition of the number e. The series expansion of ex. Solving
the differential equation dy/dx = ay.
The Natural Logarithm.
Real numbers as vectors. The square root of -1. Polar Coordinates in the plane.
Exercises on Complex Numbers PDF
Some
Exponential Integrals PDF
An elementary discussion of various exponential integrals that arise in understanding Maxwell's velocity distribution in the kinetic theory of gases.
The One-Dimensional Random Walk PDF
How far from the start
can you expect to get in a series of equal steps in a straight line, when each
step is forward or backward depending on the flip of a coin? This problem is central to statistical
physics: its solution is the key to diffusion, conduction and fluctuations in
nanosystems.