You’ve probably heard of Newton’s Method from your calculus course. It can be used to locate zeros of real-valued functions. But did...
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Really Complex Matrices
If you know how to multiply 2×2 matrices, and know about complex numbers, then you’ll enjoy this connection. Any complex number...
Continue reading...Products of Sums of Two Squares
Here’s a nice theorem due to Fibonacci, in 1202. Theorem. If integers N and M can each be written as the...
Continue reading...Making Magic Squares
A magic square is an NxN matrix in which every row, column, and diagonal add up to the same number....
Continue reading...Magic Squares, indeed!
Perhaps you’ve seen the magic square 8 1 6 3 5 7 4 9 2 which has the property that all rows,...
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