Spread Polynomials
The spread polynomials are in a sense equivalent to the Chebyshev polynomials of the first kind, but enable one to avoid square roots and conventional trigonometric functions in certain contexts, notably in rational trigonometry.
Read more about this topic: Chebyshev Polynomials
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“We should spread joy, but, as far as we can, repress sorrow.”
—Michel de Montaigne (1533–1592)