*A new technique is described for providing a geometric interpretation of a function of a complex variable.*

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*Two proofs, one from calculus I, one from calculus II, that 1 - x^r < r*(1 - x). *

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*The author presents a geometric proof for the sum of a geometric series by using similar triangles.*

If \(s_n\) is the product of the entries in the \(n\)th row of Pascal's Triangle and \(r_n = s_n/s_{n-1}\), then a proof is given of the fact that \( \lim_{n \rightarrow \infty} r_n/r_{n-1} =...

Capsules on sequences and series

*An algorithm, with examples, for multiplying by \(m\) modulo \( \)n without actually carrying out the multiplications in ordinary arithmetic*