♥♥ Inégalités

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Mathematics abounds in inequalities, often drawing on differential or integral calculus. Many problems can be solved with their help. So let's explore them!

Most physical phenomena involve transcendental functions such as the exponential and trigonometric functions. To minimize computation times, we try to replace them with polynomials.

The arithmetic, quadratic, geometric and harmonic means (among many others) are all examples of a general family: the power means. They satisfy a well-known chain of inequalities.

Real numbers can be written without making an arbitrary choice of base. Euclid's algorithm provides a method that extends to all real numbers and leads to the notion of a continued fraction. In this notation, the golden ratio becomes the simplest irrational number to write!